IRC confirms its a halving of accuracy, so the PoisonPowder would still hit (2544 <= 3750)
Also, would you like to add in the new Substitution groupings? EDIT: Also, you need to specify a number of Subs as per SDS's new rules. MK said between 1 and 3 are allowed
Ivysaur used Protect
-7 EN
Sceptile used Swords Dance
+2 Atk
-7 EN
-2 HP Sceptile (Poison)
Sceptile used Detect
-7 EN
Ivysaur used Venoshock
(13 + 3 + 1.5) * 1.5 = 26.25 = 26 DMG (Protect)
-9 EN Sceptile
-7 EN
-2 HP Sceptile (Poison)
Sceptile used Acrobatics
No Crit (6940 > 625)
11 * 1.5 + 3.5 = 20 DMG
-7 EN
Ivysaur used Venoshock
No Crit (5640 > 625)
(13 + 3 + 1.5) * 1.5 = 26.25 = 26 DMG
-11 EN
-2 HP Sceptile (Poison)

HP: 25
EN: 51
Status: None

HP: 10
EN: 51
Status: Poison