Nu Udra

Mountainwalk

Nu Udra enters with X oil counters on it.

When Nu Udra deals combat damage to a player, creature or planeswalker you may remove a oil counter from it. If you do, untap Nu Udra, and after this combat phase, there is an additional combat phase.

At the beginning of your endphase, remove an oil counter from Nu Udra. If you don't, sacrifice Nu Udra.