All Hallow's Eve is fun, even if MTG would shy away from a lot of real-life references like this
Glaceon W - Deep Chil 30 At the end of your opponents next turn, put 9 damage counters on the Defending Pokmon
Bilbo, Birthday CelebrantBilbo, Birthday Celebrant: Allows you to increase lifegain, suitable for triggering cards like Prize PigPrize Pig
Itll act as an asymmetrical board wipe and you get to swing at your opponents with everything youve got
This is difficult to pull off since it requires a lot of moving parts, but its technically possible
If theyve put a lot of spells on the stack, perhaps by storming off with Weather the Storm, you can drop Mindbreak Trap to exile every single one of those copies, completely nullifying their storm