Vigor + Walking Ballista + The Rollercrusher Ride

Prerequisites

• There are four or more card types among cards in your graveyard.

Steps

1. 1Activate Walking Ballista's second ability by removing a +1/+1 counter from it, putting two +1/+1 counters on it due to Vigor.
2. 2Activate Walking Ballista's second ability by removing a +1/+1 counter from it, dealing 2 damage to any target.
3. 3Repeat as desired.

Effects

• Infinite +1/+1 counters on creatures you control
• Infinite damage