rayquaza the pokemon card Reprint Bundle Lot of 4 and put it into your hand Pokemon » Rayquaza - 153/217

A 4-mana 2/5 that can crank out 2/2s is a nice mana sink, and it actually combos pretty well with itself, since you can just choose to use that ability rather than cast spells, and that allows you to still add to the board while getting to transform the Child into its werewolf form, which will be making that same token into a 3/2 -- and pumping your whole board in generally is pretty nice

1998 Pokemon Japanese Promo Bronze 3rd-2nd Tournament Trophy Pikachu 5

This allows you to stack energy incredibly fast and if you can keep Moltres alive with Potions, then you can have several cards at full energy

near mint or mint (more on determining card condition below)