The Founding Titan

Titanshift {10}{u}{u} (If you cast this spell for its Titanshift cost, put it over target Human creature you control. They Titanshift into the creature on top.)
The Founding Titan can't be countered.
Hexproof, Indestructible
When The Founding Titan enters the battlefield, if it was Titanshifted, gain control of all creatures and planeswalkers.