XYZ-Tank Dragon Cannon

Flying, first strike, trample, haste
Discard a card: Choose one. Activate only as a
sorcery.
• Destroy target artifact or land.
• XYZ-Tank Dragon Cannon deals 5 damage to
target creature.
• XYZ-Tank Dragon Cannon deals 4 damage to
target player.
If XYZ-Tank Dragon Cannon would die, exile it instead. Then return to the battlefield two of the original creatures used to meld it.