Tefron, the Undefeated

{2}{u}{t}: Create a 1/1 blue Merfolk Creature Token with hexproof.
{3}{g}{t}: Proliferate (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
{3}{w}{t}: Exile Target Creature until
Tefron, the Undefeated leaves the battlefield.