The Glorious Shiny Magikarp

At the beginning of your upkeep, put an evolution counter on The Glorious Shiny Magikarp.
Remove 5 evolution counters from The Glorious
Shiny Magikarp: Sacrifice The Glorious Shiny Magikarp and search your library or graveyard, or
exile zone for a creature named "Gyrados, Sea Leviathan" and play it without paying its mana
cost. Shuffle your deck.
"It used Splash"