Anudhal, Core of Evolution

Anudhal enters the battlefield tapped.
{t}: Add {c}{c} to your mana pool.
At the beginning of your end step, if you control
a shapeshifter, Anudhal becomes a creature with
power and toughness of target shapeshifter you control, until your next upkeep.
Anudahl is an enormous shroom, that connects
the earth with the ocean.