The Great Goblin, and Sunbond

Prerequisites

• The Great Goblin on the battlefield
• Sunbond on the battlefield

Steps

1. Gain life
2. The creature with Sunbond attached triggers, putting a +1/+1 counter on it The Great Goblin's first ability triggers, dealing 2 damage to an opponent and causing you to gain 2 life due to its lifelink
3. Repeat from step 2

Results

• Infinite +1/+1 counters on certain creatures
• Infinite damage
• Infinite lifegain
• Infinite lifegain triggers