Voice of Resurgence is a mythic Creature — Elemental card from Dragon's Maze (DGM), collector number 114. Current market price: $1.57 (foil $18.81), TCGplayer market prices via Scryfall.
Whenever an opponent casts a spell during your turn and when this creature dies, create a green and white Elemental creature token with "This token's power and toughness are each equal to the number of creatures you control."