Whenever one or more Birds you control deal combat damage to a player, choose one You may put a Bird creature card from your hand or graveyard onto the battlefield with a finality counter on it
Whenever one or more other creatures you control enter, if one or more of them entered from a graveyard or was cast from a graveyard, put a +1/+1 counter on each creature you control.
There's already fairly high upside reanimating an opponent's creature at instant speed, but you can eek even more value out of Conscription by firing it off in response to an opposing reanimation effect
I leave in the 5 Game Changers because I started this before the Commander Brackets, but replace Crop Rotation, Cyclonic Rift, Demonic Tutor, Field of the Dead, and Rhystic Study if you want to move down from bracket 4
The game tried a unique leveling system in which classes level up skills and spells by using them over and over