Temporal Paradoxical Mechanism

Indestructible

Every time a creature, planeswalker, or player dies, put a soul counter on Temporal Paradoxical Mechanism. Once 10 counters have been accumulated, it activates

{4}{t}: Exile Temporal Paradoxical Mechanism, Take an extra turn

Lan-Quai spent centuries finding the parts of the great mechanism, he sent his harvesters to get the souls to power the great machine.