Contamination (123) [Urza's Saga]Set: Urza's Saga Type: Enchantment Rarity: rare Cost: {2}{B} At the beginning of your upkeep, sacrifice this enchantment unless you sacrifice a creature. If a land is tapped for mana, it produces {B} instead of any other type and amount.

Put a +1/+1 counter and a lifelink counter on that creature and a +1/+1 counter and a lifelink counter on Arwen

Set: Commander Masters Type: Creature — Demon Rarity: mythic Cost: {6}{B}{B} Flying Your opponents can't gain life

(Treat them and anything attached to them as though they don't exist until your next turn

Set: Core Set 2020 Promos Type: Creature — Human Cleric Rarity: rare Cost: {W}{W} Whenever an Angel you control enters

Set: Zendikar Rising Promos Type: Creature — Angel Cleric Rarity: mythic Cost: {3}{W}{W} Flying

Set: New Capenna Commander Type: Instant Rarity: rare Cost: {X}{1}{U} Each of X target creatures you control connive

Set: Secret Lair Drop Type: Enchantment Rarity: rare Cost: {2}{W}{W} When this enchantment enters

Set: Secret Lair Drop Type: Artifact Rarity: rare Cost: {2} {1}

Set: Time Spiral Type: Legendary Land Rarity: rare {T}: Add {C}

Exile this card from your graveyard: Create a token that's a copy of it

Set: Modern Horizons 2 Type: Artifact Creature — Assembly-Worker Rarity: rare Cost: {3} If you would create a Clue

where X is the number of other attacking creatures