once all successfully cast, anyone know how to win vs this?

Whenever another card is put into a graveyard from anywhere, exile that card.

Destroy all artifacts, creatures, and enchantments. Cycling (, Discard this card: Draw a card.)

Players can't cycle cards.

Creatures you control have flying, first strike, vigilance, trample, haste, and protection from black and from red.

As this creature enters, choose a color. All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.

Flying As Iona enters, choose a color. Your opponents can't cast spells of the chosen color.

This land enters tapped. When this land enters, exile target player's graveyard. : Add .

Flying You can't lose the game and your opponents can't win the game.

When this artifact enters, destroy all Curses attached to you. You have hexproof. (You can't be the target of spells or abilities your opponents control, including Aura spells.)

Flying, vigilance, indestructible Other permanents you control have indestructible.