Infinite damageInfinite lifegain triggersInfinite lifegainInfinite +1/+1 counters on creatures you control
How it works
Give Walking Ballista lifelink, if needed.
If Walking Ballista has less than two +1/+1 counters on it, activate Unspeakable Symbol by paying 3 life, putting a +1/+1 counter on Walking Ballista.
Activate Walking Ballista's second ability by removing a +1/+1 counter from it, dealing 4 damage to an opponent or a permanent an opponent controls, and causing you to gain 4 life.
Repeat from step 2.
This elegant loop turns Walking Ballista into a self-sustaining engine of absolute destruction by weaponizing its own counters. While Unspeakable Symbol lets you trade your life total to continually feed Walking Ballista fresh +1/+1 counters, the true magic lies in the lethal math provided by Angrath's Marauders and Gratuitous Violence. Because these two damage-doubling effects stack together, every single point of damage your creatures deal is multiplied fourfold—turning a single counter removed from Walking Ballista into a massive four damage blast that effortlessly outpaces the life you spent to reload it.