Status: Completed
This set has seen a lot of use since HGSS brought about Morning Sun, so I felt the need to have an analysis on-site. If I missed anything or someone would like information added, please let me know.
http://www.smogon.com/dp/pokemon/arcanine/
[SET]
name: Morning Glory
move 1: Flare Blitz
move 2: ExtremeSpeed
move 3: Morning Sun
move 4: Toxic / Will-O-Wisp
item: Life Orb / Leftovers
ability: Intimidate
nature: Adamant / Jolly
evs: 120 HP / 252 Atk / 136 Spe
[SET COMMENTS]
<p>While Morning Sun's recovery may not be as set in stone as moves like Recover and Softboiled, it goes a long way in aiding Arcanine as it tears through teams, holding either a Life Orb (for increased damage) or Leftovers (for added survivability).</p>
<p>Flare Blitz is Arcanine's main attack, while ExtremeSpeed cleans up anything that can survive the attack. Morning Sun helps Arcanine recover from repeated recoil damage from both Flare Blitz and Life Orb (if you choose this item) as well as from entry hazard damage, though at the cost of a turn.</p>
<p>The move in the last slot is mainly filler, although the choice is mainly decided by how you play Arcanine. More cautious players may opt to use Toxic, helping them to wear down counters, such as Hitmontop and Slowbro, who may try to stop your sweep. Will-O-Wisp is a cautious move, easily incapacitating physical sweepers, although the many Fire-types with Flash Fire and threatening Guts sweepers can diminish its usefulness. If you're looking to use Arcanine as a stand-alone sweeper, you may be interested in Thunder Fang or Iron Head, as they are the most competetively viable attacks Arcanine has at its disposal; Thunder Fang puts dents in Water-types, while Iron Head provides reliable damage with a chance to flinch.</p>
<p>Due to the increased usage of max Speed base 80s - most notably Venusaur, Arcanine might want to give up some of its offensive power to outrun and defeat these threats. To reach this Speed tier, run an EV spread of 120 HP / 152 Atk / 236 Spe with an Adamant nature. This spread is actually more efficient than the given spread with a Jolly nature, since it provides a higher Attack stat.</p>
<p>To outpace bulky Froslass, Arcanine can run a spread of 68 HP / 252 Atk / 16 Def / 16 SpD / 156 Spe with a Jolly nature. Once outsped, the threat Froslass presents is mitigated, allowing for an easier sweep.</p>
<p>Arcanine is often seen abusing strong sunlight in an attempt to increase the HP recovered by Morning Sun to 2/3 of its total HP. Leads who can set up Sunny Day, such as Ambipom, Uxie and Claydol, are great additions to a team based around Arcanine (Uxie and Claydol more so, thanks to their Ground-type immunities). The bulky and powerful Tangrowth is a great complimentary sweeper for Arcanine, since it can provide status support and counter Water-types for Arcanine. In return, Arcanine can sponge super effective Fire-type attacks aimed at Tangrowth. Any Grass-type with the Chlorophyll ability will enjoy being on a Sunny Day team with Arcanine.</p>
<p>Flash Fire is also a viable ability choice, although it doesn't become a superior choice unless Arcanine is placed on a Sunny Day team. This is a great environment for Arcanine, since it gives Flare Blitz double STAB. Flash Fire's usefulness is also greatly influenced by Arcanine's teammates; if there are many Grass-types on its team, Arcanine can boost the power of its Fire-type attacks very easily, thanks to type synergy.</p>
<p>Having a way to take care of auto-weather effects from Hippopotas and Snover is reccomended, since Morning Sun's recovery drops from 1/2 Arcanine's total HP in normal battle conditions to a low 1/4. Since both of these threats are typically seen as leads, they can easily be disposed of by your own lead. Ambipom is able to break their Focus Sash with Fake Out and use either Sunny Day to counter their weather effects or Return to nab the KO.</p>
This set has seen a lot of use since HGSS brought about Morning Sun, so I felt the need to have an analysis on-site. If I missed anything or someone would like information added, please let me know.

http://www.smogon.com/dp/pokemon/arcanine/
[SET]
name: Morning Glory
move 1: Flare Blitz
move 2: ExtremeSpeed
move 3: Morning Sun
move 4: Toxic / Will-O-Wisp
item: Life Orb / Leftovers
ability: Intimidate
nature: Adamant / Jolly
evs: 120 HP / 252 Atk / 136 Spe
[SET COMMENTS]
<p>While Morning Sun's recovery may not be as set in stone as moves like Recover and Softboiled, it goes a long way in aiding Arcanine as it tears through teams, holding either a Life Orb (for increased damage) or Leftovers (for added survivability).</p>
<p>Flare Blitz is Arcanine's main attack, while ExtremeSpeed cleans up anything that can survive the attack. Morning Sun helps Arcanine recover from repeated recoil damage from both Flare Blitz and Life Orb (if you choose this item) as well as from entry hazard damage, though at the cost of a turn.</p>
<p>The move in the last slot is mainly filler, although the choice is mainly decided by how you play Arcanine. More cautious players may opt to use Toxic, helping them to wear down counters, such as Hitmontop and Slowbro, who may try to stop your sweep. Will-O-Wisp is a cautious move, easily incapacitating physical sweepers, although the many Fire-types with Flash Fire and threatening Guts sweepers can diminish its usefulness. If you're looking to use Arcanine as a stand-alone sweeper, you may be interested in Thunder Fang or Iron Head, as they are the most competetively viable attacks Arcanine has at its disposal; Thunder Fang puts dents in Water-types, while Iron Head provides reliable damage with a chance to flinch.</p>
<p>Due to the increased usage of max Speed base 80s - most notably Venusaur, Arcanine might want to give up some of its offensive power to outrun and defeat these threats. To reach this Speed tier, run an EV spread of 120 HP / 152 Atk / 236 Spe with an Adamant nature. This spread is actually more efficient than the given spread with a Jolly nature, since it provides a higher Attack stat.</p>
<p>To outpace bulky Froslass, Arcanine can run a spread of 68 HP / 252 Atk / 16 Def / 16 SpD / 156 Spe with a Jolly nature. Once outsped, the threat Froslass presents is mitigated, allowing for an easier sweep.</p>
<p>Arcanine is often seen abusing strong sunlight in an attempt to increase the HP recovered by Morning Sun to 2/3 of its total HP. Leads who can set up Sunny Day, such as Ambipom, Uxie and Claydol, are great additions to a team based around Arcanine (Uxie and Claydol more so, thanks to their Ground-type immunities). The bulky and powerful Tangrowth is a great complimentary sweeper for Arcanine, since it can provide status support and counter Water-types for Arcanine. In return, Arcanine can sponge super effective Fire-type attacks aimed at Tangrowth. Any Grass-type with the Chlorophyll ability will enjoy being on a Sunny Day team with Arcanine.</p>
<p>Flash Fire is also a viable ability choice, although it doesn't become a superior choice unless Arcanine is placed on a Sunny Day team. This is a great environment for Arcanine, since it gives Flare Blitz double STAB. Flash Fire's usefulness is also greatly influenced by Arcanine's teammates; if there are many Grass-types on its team, Arcanine can boost the power of its Fire-type attacks very easily, thanks to type synergy.</p>
<p>Having a way to take care of auto-weather effects from Hippopotas and Snover is reccomended, since Morning Sun's recovery drops from 1/2 Arcanine's total HP in normal battle conditions to a low 1/4. Since both of these threats are typically seen as leads, they can easily be disposed of by your own lead. Ambipom is able to break their Focus Sash with Fake Out and use either Sunny Day to counter their weather effects or Return to nab the KO.</p>