Balustrade Wurm (Duskmourn: House of Horror)

Creature Ñ Wurm - This spell can't be countered.
Trample, haste
Delirium Ñ {2}{G}{G}: Return this card from your graveyard to the battlefield with a finality counter on it. Activate only if there are four or more card types among cards in your graveyard and only as a sorcery.