Will of the Temur [Tarkir: Dragonstorm Commander]

Set: Tarkir: Dragonstorm Commander Type: Sorcery Rarity: Rare Cost: {5}{U} Choose one. If you control a commander as you cast this spell, you may choose both instead.• Create a token that's a copy of target permanent, except it's a 4/4 Dragon creature with flying in addition to its other types.• Target player draws cards equal to the greatest mana value among permanents you control.