(Volcano Conclave isn't a spell.)

At the beginning of your end step, if you didn't cast any spells this turn, Volcano Conclave deals 1 damage to you.

Volcano Conclave is indestructible. (Destroy effects and lethal damage don't destroy it.)

When Volcano Conclave enters the battlefield, put a land you control on the bottom of its owner's library.

: Add  to your mana pool.