All 46 Combos with Caradora, Heart of Alacria

Gatta and Luzzu + Caradora, Heart of Alacria + Walking Ballista

Infinite Damage: Infinite damage, Infinite +1/+1 counters on a creature

Cast Gatta and Luzzu by paying {2}{W}. When Gatta and Luzzu enters the battlefield, it triggers, targeting Walking Ballista. Activate Walking Ballista by removing a +1/+1 counter from it, targeting itself, but instead putting two +1/+1 counters on it due to Gatta and Luzzu and Caradora. Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to any target. Repeat from step 3.