Pentavus
Dross Scorpion
Grim Monolith

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Pentavus with two +1/+1 counters on it on the battlefield).

   Steps

How does this combo work?
1
Activate Grim Monolith by tapping it, adding
2
Activate Pentavus's first ability by paying 1 and removing a +1/+1 counter from it, creating a 1/1 Pentavite creature token.
3
Activate Pentavus's second ability by paying 1 and sacrificing the Pentavite.
4
When the Pentavite dies, Dross Scorpion triggers, untapping Grim Monolith.
5
Resolve the Pentavus ability, putting a +1/+1 counter on it.
6
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite sacrifice triggers
Infinite death triggers
Infinite colorless mana
Infinite mana artifacts you control can produce
Infinite untap of artifacts you control
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