Jackknight [Unstable] Aura Curse Set: Mercadian Masques Type: Enchantment

Set: Mercadian Masques Type: Enchantment Rarity: Rare Cost: {2}{G} Exile a creature you control: Add X mana of any one color

Set: Commander 2018 Type: Artifact Rarity: Rare Cost: {5} At the beginning of each player's precombat main phase

your families

Creatures your opponents control lose trample and can't have or gain trample

Argivian scholar

Jackknight [Unstable] Aura Curse Set: Mercadian Masques Type: EnchantmentSet: Unstable Type: Artifact Creature Cyborg Knight Rarity: Rare Cost: {1}{W} Whenever another artifact enters the battlefield under your control, put a +1 +1 counter on Jackknight. If that artifact is a Contraption, Jackknight gains lifelink until end of turn. "My sword is at your service, as are my scissors, corkscrew, and bottle opener."