"Eighth Edition", +=8 (2)
Phyrexian Colossus doesn't untap during your untap step.
Pay 8 life: Untap Phyrexian Colossus.
Phyrexian Colossus can't be blocked except by three or more creatures.
When Primeval Force enters, sacrifice it unless you sacrifice three Forests.
Gatherer works better in the Companion app!