Contamination [Urza's Saga] H29 change Halfdane's base power and

change Halfdane's base power and toughness to the power and toughness of target creature other than Halfdane until the end of your next upkeep

Set: Base Set Shadowless Unlimited Type: Lightning Rarity: Common Retreat cost: Colorless

Set: XY: Fates Collide Type: Psychic Rarity: Ultra Rare Retreat cost: Colorless

Set: EX: Team Magma vs Team Aqua Type: Fire Rarity: Ultra Rare Retreat cost: Colorless

Set: Legends Type: Creature — Elemental Rarity: Rare Cost: {2}{U} When Time Elemental attacks or blocks

Contamination [Urza's Saga] H29 change Halfdane's base power andSet: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{B} At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature. If a land is tapped for mana, it produces {B} instead of any other type and amount.