Chain Lightning [Amonkhet Invocations] Mirrodin Then if you have seven

Then if you have seven or more cards in your graveyard

Set: Time Spiral Timeshifted Type: Instant Rarity: Rare Cost: {G} Counter target instant or Aura spell that targets a permanent you control

Set: Limited Edition Beta Type: Enchantment — Aura Rarity: Uncommon Cost: {W} Enchant creature

Set: Unlimited Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {1}{B} Enchant creature card in a graveyard

Whereas Mishra works in metals and stone

Chain Lightning [Amonkhet Invocations] Mirrodin Then if you have sevenSet: Amonkhet Invocations Type: Sorcery Mythic Cost: {R} Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.