Noxious Gearhulk [Kaladesh]Set: Kaladesh Type: Artifact Creature Construct Rarity: Mythic Cost: {4}{B}{B} Menace When Noxious Gearhulk enters the battlefield, you may destroy another target creature. If a creature is destroyed this way, you gain life equal to its toughness.

add {C}{C}{C} instead

Set: Base Set Shadowless Unlimited Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

Set: Fifth Edition Type: Artifact Rarity: Uncommon Cost: {0} {T}

Set: Neo Destiny Unlimited Type: Lightning Rarity: Rare Retreat cost: Colorless

If it comes up tails

"Our lives are woven together like the trees' branches over our heads

Set: Ninth Edition Type: Creature — Plant Rarity: Rare Cost: {1}{G} {T}: Add one mana of any color

players can't untap more than two permanents during their untap steps

Set: Dominaria Type: Creature — Shade Rarity: Rare Cost: {B}{B}{B} {B}: Dread Shade gets +1/+1 until end of turn

Set: Odyssey Type: Enchantment Rarity: Rare Cost: {W} {1}: The next time an instant or sorcery spell would deal damage to you this turn

When Merfolk Trickster enters the battlefield

its owner may cast it without paying its mana cost