Contamination [Urza's Saga] Vehicle If it's a land card

If it's a land card or a creature card with mana value less than or equal to the number of loyalty counters on Nissa

if it has a +1/+1 counter on it

Set: Dark Ascension Type: Instant Rarity: Common Cost: {2}{R} Fires of Undeath deals 2 damage to any target

If Chaos Orb turns over completely at least once during the flip

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} As Black Vise enters the battlefield

Contamination [Urza's Saga] Vehicle If it's a land cardSet: 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.