Cast Broodguard Elite for its warp cost by paying {1}{G}.
Activate Phyrexian Altar by sacrificing Broodguard Elite, adding {G}.
When Broodguard Elite dies, it and Enduring Renewal trigger.
Resolve the Broodguard Elite trigger, putting a +1/+1 counter on Basking Broodscale.
Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token.
Resolve the Enduring Renewal trigger, returning Broodguard Elite from your graveyard to your hand.
Activate the Eldrazi Spawn by sacrificing it, adding {C}.
Repeat.

Infinite LTB

Infinite ETB

Infinite sacrifice triggers

Infinite death triggers

Infinite storm count

Enduring Renewal

Broodguard Elite

Basking Broodscale

Phyrexian Altar

Cast Broodguard Elite for its warp cost by paying {1}{G}.
Activate Phyrexian Altar by sacrificing Broodguard Elite, adding {G}.
When Broodguard Elite dies, it and Enduring Renewal trigger.
Resolve the Broodguard Elite trigger, putting a +1/+1 counter on Workhorse.
Resolve the Enduring Renewal trigger, returning Broodguard Elite from your graveyard to your hand.
Activate Workhorse by removing a +1/+1 counter from it, adding {C}.
Repeat.

Workhorse

Cast Broodguard Elite for its warp cost by paying {1}{G}.
Activate Ashnod's Altar by sacrificing Broodguard Elite, adding {C}{C}.
When Broodguard Elite dies, it and Enduring Renewal trigger.
Resolve the Broodguard Elite trigger, putting a +1/+1 counter on Crystalline Crawler.
Resolve the Enduring Renewal trigger, returning Broodguard Elite from your graveyard to your hand.
Activate Crystalline Crawler by removing a +1/+1 counter from it, adding {G}.
Repeat.

Infinite colorless mana

Infinite colored mana

Infinite +1/+1 counters

Crystalline Crawler

Ashnod's Altar

Cast Broodguard Elite for its warp cost by paying {G}.
Broodguard Elite enters the battlefield and dies as a state-based action due to having 0 toughness, triggering Pitiless Plunderer and Enduring Renewal.
Resolve the Pitiless Plunderer trigger, creating a Treasure token.
Resolve the Enduring Renewal trigger, returning Broodguard Elite from your graveyard to your hand.
Activate the Treasure by tapping and sacrificing it, adding {G}.
Repeat.

Pitiless Plunderer

Combos with "Broodguard Elite"