Sakashima the Impostor [Saviors of Kamigawa] Commander 2018 The goblins did not understand

The goblins did not understand their attraction to the mana rig

the maiden phoenix

where X is the exiled card's mana value

If the chosen card is cast as a spell

Sakashima the Impostor [Saviors of Kamigawa] Commander 2018 The goblins did not understandSet: Saviors of Kamigawa Type: Legendary Creature Human Rogue Rarity: Rare Cost: {2}{U}{U} You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step."