If you are running Gruul (red-green), Force of Will is not an option
Between Abrade, Prismari Command, Force of Vigor, Wear // Tear, and Kolaghan's Command, not to mention cards like Assassin's Trophy, Abrupt Decay, Stony Silence, and Karn, the Great Creator, most decks will have some sort of answer to the artifact
Card Name Mana Cost Type Creature Shapeshifter Rarity Rare rules Text You may have this creature enter as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature." P/T Number 212 Language English Legal Formats Commander, Legacy, Modern, Pioneer, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pauper, Standard, Timeless Rulings (4/15/2013) Progenitor Mimic copies exactly what was printed on the original creature and nothing more (unless that creature is copying something else or is a token)
They only have four cards that are from the set
