Revolt of the Peasants

Creatures you control get +X/+0 and gain trample until end of turn, where X is 1 plus
the number of cards named Rise of the Peasants in your graveyard.
"Burn their homes. Pillage their coffers. Take
their lives. The nobles have done the same to us. Citizens of Bountree, take your vengeance!"
— Forrthel, Captain of Bountree Militia