Activate Skirk Prospector by sacrificing Scuzzback Marauders, adding {R}.
When Scuzzback Marauders dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Grumgully.
Repeat.

Infinite LTB

Infinite ETB

Infinite sacrifice triggers

Infinite death triggers

Infinite red mana

Skirk Prospector

Scuzzback Marauders

Grumgully, the Generous

Cast First Day of Class by paying {1}{R}.
Activate Skirk Prospector by sacrificing Scuzzback Marauders, adding {R}.
When Scuzzback Marauders dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Scuzzback Marauders enters the battlefield, First Day of Class triggers, putting a +1/+1 counter on Scuzzback Marauders
Repeat from step 2.

First Day of Class

Activate Goblin Bombardment by sacrificing Scuzzback Marauders.
Scuzzback Marauders dies, triggering its persist ability, returning it to the battlefield with no -1/-1 counters due to Bramblewood Paragon.
Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
Repeat.

Infinite damage

Bramblewood Paragon

Goblin Bombardment

Activate Ashnod's Altar by sacrificing Scuzzback Marauders, adding {C}{C}.
Scuzzback Marauders dies, triggering its persist ability, returning it to the battlefield with no -1/-1 counters due to Bramblewood Paragon.
Repeat.

Infinite colorless mana

Ashnod's Altar

Activate Phyrexian Altar by sacrificing Scuzzback Marauders, adding one mana of any color.
Scuzzback Marauders dies, triggering its persist ability, returning it to the battlefield with no -1/-1 counters due to Bramblewood Paragon.
Repeat.

Combos with "Scuzzback Marauders"