Mortar Drone

{t}, Sacrifice an artifact: deal 1 damage to target creature.
{3}, {t}: Roll a six-sided dice. On a 6, Mortar Drone deals 4 damage to target creature with flying.
"It's a bit inaccurate, but we can make a couple hundred of them. With those numbers they're bound to hit something, just do the math..."
- Drone Technician