Yuriko, the Tiger's Shadow (Foil Etched) [Commander Masters] Lizard Mutant and you may spend mana

and you may spend mana as though it were any color to cast it

Set: March of the Machine Commander Type: Artifact — Equipment Rarity: Uncommon Cost: {1} Equipped creature gets +1/-1

Every Draft Booster has a possibility of containing Retro-Frame

+1: Create a 3/2 red and white Spirit creature token

Set: Urza's Saga Type: Creature — Dragon Rarity: Rare Cost: {2}{R}{R} Flying

Yuriko, the Tiger's Shadow (Foil Etched) [Commander Masters] Lizard Mutant and you may spend manaSet: Commander Masters Type: Legendary Creature Human Ninja Rarity: Rare Cost: {1}{U}{B} Commander ninjutsu UB (UB, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand or command zone tapped and attacking.) Whenever a Ninja you control deals combat damage to a player, reveal the top card of your library and put that card into your hand. Each opponent loses life equal to that card's converted mana cost.