Xolatoyac, the Smiling Flood [The Lost Caverns of Ixalan Commander]

Set: The Lost Caverns of Ixalan Commander Type: Legendary Creature — Salamander Serpent Rarity: Mythic Cost: {4}{G}{U} Whenever Xolatoyac, the Smiling Flood enters the battlefield or attacks, put a flood counter on target land. That land is an Island in addition to its other types for as long as it has a flood counter on it.At the beginning of your end step, untap each permanent you control with a counter on it.