[Pocket]

Sorry this is an incomplete check I started 6 days ago, but you can start working on this part before I check the rest ;x

[Overview]

Tyranitar and Hippowdon, Pokemon with the Sand Stream ability are staple partners along with Gliscor.

~ re-phrase; staple implies an absolute must

Poison Heal ability gives it immunity to status.

~ More importantly you need to add that Poison Heal offers Gliscor 12.5% recovery in one turn, and a quarter health recovery in 2 turns, which is why Protect is so popular on Gliscor

Still has to deal with some 4MSS, especially with SR and Roost now in the mix.

~ Not quite sure if this is worth adding in the Overview

Huge usage of Rain teams and special attackers give Gliscor trouble. However, the ability to wall top-tier threats such as Terrakion, Lucario, and Conkeldurr will forever earn it a spot as one of the most useful Pokemon in OU.

~ Conkeldurr not so much since it now has Ice Punch

BW2 brought a fair share of counters and new uses- the popularity of Landorus-T and the reallowance of Garchomp give even more uses for Gliscor on teams.

~ Also add that Landorus-T now competes for the "Defensive Ground / Flying" spot, but can still hit like a truck

Recent ban of Sand Veil in OU has made the Substitutes a lot easier to stop- however, that doesn't make them less effective

~ change Substitute to AcroBat

[Substitute]

~ change the set order to the one I posted previously

~ also change the spread to 244 HP / 28 Def / 236 Spe; HP EVs make sure that Gliscor heals all health lost from Substitute after two turns (explain this in AC)

~ update your bullet points to reflect the set order changes (Toxic is a staple now)

~ Replace all alternative spread with 244 HP

[Defensive]

Typing provides handy immunities to Electric and Ground type attacks, as well as resistances to Fighting and Bug.

~ Add that its dual typing provides a neutrality to Rock, which is amazing when paired with resistances of Flying types.