The Great Goblin, War Elemental, and Oko, Lorwyn Liege // Oko, Shadowmoor Scion

Prerequisites

• The Great Goblin on the battlefield
• War Elemental on the battlefield
• Oko, Lorwyn Liege // Oko, Shadowmoor Scion on the battlefield

Steps

1. Activate Oko's first loyalty ability by putting two loyalty counters on it, causing War Elemental to gain all creature types Put a counter on War Elemental
2. The Great Goblin's first ability triggers, as War Elemental is a Goblin, Orc and Army due to Oko, dealing 2 damage to an opponent
3. War Elemental triggers, putting a +1/+1 counter on it
4. Repeat from step 2

Results

• Infinite +1/+1 counters on a creature
• Infinite damage