Goblin Bombardment + Felidar Guardian + Karmic Guide

Goblin Bombardment

Felidar Guardian

Karmic Guide

How it works

1. Cast Felidar Guardian by paying its mana cost.
2. When Felidar Guardian enters the battlefield, it triggers, targeting Karmic Guide
3. Holding priority, activate Goblin Bombardment by sacrificing Felidar Guardian.
4. Resolve the Felidar Guardian ability, blinking Karmic Guide
5. When Karmic Guide enters, it triggers, returning Felidar Guardian from your graveyard to the battlefield.
6. Repeat from step 2.