Infinite +1/+1 counters on a creature, Infinite ETB, Infinite LTB, Infinite death triggers, Infinite sacrifice triggers
Activate Bloodflow Connoisseur by sacrificing Dread Tiller.
When Dread Tiller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Dread Tiller enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Bloodflow Connoisseur ability
Repeat.
Component Cards
How It Works
Activate Bloodflow Connoisseur by sacrificing Dread Tiller.
When Dread Tiller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Dread Tiller enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Bloodflow Connoisseur ability
Repeat.