From the GRAAAAAVE Chthonian Nightmare Fauna Shaman is also only one fairly direct way of going about getting the creatures you want into your graveyard
(Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.) Sorcery Color tag templates(None) Overwhelming Stampede Until end of turn, creatures you control gain trample and get +X/+X, where X is the greatest power among creatures you control
This is a great addition in an infect or spider-themed deck to ward off flying creatures your opponents control
Once I hit 10 decks or more, I end up doing a purge, and cutting right back down to my (more or less) forever decks, and then letting things naturally grow out from there once more
Magecraft even gives you a pest for the copy itself, so you end up making a profit of one token
If youre a black deck they know what this is