Vodya, Grave Offering

Landfall — Each player mills three cards.

At the beginning of your end step, each player may cast a nonland permanent card from their graveyard with mana value less than or equal to Vodya's power. For each player that does, put a +1/+1 counter on Vodya.

Permanents in graveyards have Delve. (Each card you exile from your graveyard while casting this spell pays for {1}.)