MTG Combo: Doubling Season + Goblin Bombardment + Mitotic Slime
With all three cards on the field, Sacrifice Mitotic Slime to Goblin Bombardment, dealing 1 damage to a target
Mitotic slime creates 2 Oozes that create 2 oozes each, which gets doubled to 4 because of Doubling Season.
Sacrifice the 4 Oozes with Goblin Bombardment, dealing 4 more damage to a target
The Oozes each create 2 more oozes, which gets doubled to 4 oozes, which totals out to 16 oozes.
Sacrifice all 16 to goblin bombardment for 16 more damage.