Vin'Goth, Rotten Reviver

Whenever a player would sacrifice a nonland permanent, they may discard a card instead.

Whenever a player would discard a card, they may sacrifice a nonland permanent instead.

When an opponent discards one or more cards, you and that player create a green 1/1 skeleton.

When an opponent sacrifices a nonland permanent, you and that player may return a nonland permanent with a lesser mana value from their graveyard to their hands.