Oceanbearer Whale

Trample, islandwalk
When Oceanbearer Whale enters the battlefield, you may sacrifice X islands you control. If you do, put X +1/+1 counters on Oceanbearer Whale, where X is the amount of islands sacrificed this way.
{t}: Add X mana of any color to your mana pool, where X is the amount of islands sacrificed with Oceanbearer Whale.