Successionism at its best

Whenever a green nontoken creature dies, that creature's controller may search their library for a card with the same name as that creature, put it onto the battlefield, then shuffle.

Whenever a player casts a creature spell, each player returns all cards with the same name as that spell from their graveyard to the battlefield.

, Sacrifice this creature: Draw a card. Dredge 1 (If you would draw a card, you may mill a card instead. If you do, return this card from your graveyard to your hand.)

Sacrifice this creature: Put a +1/+1 counter on target creature. Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.)