Base Bubble

Shroud, Indestructible
Base Bubble enters the battlefield with 3 charge counters.
At the beginning of your upkeep remove a charge counter from Base Bubble
When Base Bubble has no charge counters, exile it.
{8} Add a Charge Counter to Base Bubble
You cannot attack while Base Bubble is on the battlefield.
You cannot lose life.
You have Hexproof.