Slinn Voda, the Rising Deep [Dominaria] Born of the Gods Battle the Horde put it onto the battlefield

put it onto the battlefield under your control

Set: Mystery Booster Type: Legendary Creature — Giant Shaman Rarity: Uncommon Cost: {3}{R/G} {T}: Add {C}{C}{C}{C}

Set: Friday Night Magic 2003 Type: Creature — Beast Rarity: Rare Cost: {4}{G} This spell can't be countered

Then put a charge counter on Altar of Shadows

Slinn Voda, the Rising Deep [Dominaria] Born of the Gods Battle the Horde put it onto the battlefieldSet: Dominaria Type: Legendary Creature Leviathan Rarity: Uncommon Cost: {6}{U}{U} Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.) When Slinn Voda, the Rising Deep enters the battlefield, if it was kicked, return all creatures to their owners' hands except for Merfolk, Krakens, Leviathans, Octopuses, and Serpents.