Prerequisites
- All permanents on the battlefied
- Walking Ballista has at least two +1/+1 counters
- Darksteel Plate attached to Bellowing Aegisaur
Steps
- Remove a +1/+1 counter from Walking Ballista to deal 1 damage to Bellowing Aegisaur
- Bellowing Aegisaur triggers, putting two +1/+1 counters on each other creature you control
- Repeat
Results
Required Cards 4
Bellowing Aegisaur
Creature — Dinosaur
Walking Ballista
Artifact Creature — Construct
Doubling Season
Enchantment
Darksteel Plate
Artifact — Equipment