Mox Opal [Kaladesh Inventions] 076 Set: Alpha Edition Type: Instant

Set: Alpha Edition Type: Instant Rarity: Common Cost: {G} Target creature gets +3/+3 until end of turn

Set: Kaldheim Type: Creature — Demon Berserker Rarity: Mythic Cost: {4}{B}{B} Flying

Set: Fossil Unlimited Type: Fighting Rarity: Promo Retreat cost: Colorless

that effect deals that much arcane damage plus 1 and at the beginning of the end phase

Whenever one or more Dragons you control attack

Mox Opal [Kaladesh Inventions] 076 Set: Alpha Edition Type: InstantSet: Kaladesh Inventions Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate only if you control three or more artifacts. On loan from a private collection, this unique mechanism extracts power from a carefully prepared gemstone.