Urza's Bauble [Fifth Edition] 051 You may cast a spell

You may cast a spell from among those cards without paying its mana cost

Set: Legacy of the Valiant Card type: Effect Monster Rarity: Secret Rare Attack: 100 Defense: 100 You can only activate each effect of "Rainbow Kuriboh" once per turn

that player taps an untapped artifact

Set: HeartGold & SoulSilver: Triumphant Type: Psychic Rarity: Ultra Rare Retreat cost: 0

During your next untap step

Urza's Bauble [Fifth Edition] 051 You may cast a spellSet: Fifth Edition Type: Artifact Rarity: Uncommon Cost: {0} {T}, Sacrifice Urza's Bauble: Look at a card at random in target player's hand. You draw a card at the beginning of the next turn's upkeep.