Maelstrom Wanderer [Commander's Arsenal] Planechase Anthology Volcanic Eruption deals damage to

Volcanic Eruption deals damage to each creature and each player equal to the number of Mountains put into a graveyard this way

When Cyclopean Tomb is put into a graveyard from the battlefield

They don't untap during their controller's next untap step

You may have that player shuffle their library

Maelstrom Wanderer [Commander's Arsenal] Planechase Anthology Volcanic Eruption deals damage toSet: Commander's Arsenal Type: Legendary Creature Elemental Rarity: Mythic Cost: {5}{G}{U}{R} Creatures you control have haste. Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order. Then do it again.)