Molten Echoes + Cordial Vampire + Phyrexian Altar + Dusk Legion Sergeant

Exhibition

Decks

How it works

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Cast Dusk Legion Sergeant by paying .
When Dusk Legion Sergeant enters, Molten Echoes triggers, creating a token copy of Dusk Legion Sergeant with haste.
Activate the token Dusk Legion Sergeant by sacrificing it.
When the Dusk Legion Sergeant token dies, Cordial Vampire triggers, putting a +1/+1 counter on each Vampire you control.
Resolve the token Dusk Legion Sergeant's ability, giving nontoken Vampires you control persist until end of turn.
Activate Phyrexian Altar by sacrificing another nontoken Vampire with base toughness 2 or higher, adding .
When the Vampire dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When the Vampire enters, Molten Echoes triggers, creating a token copy of it with haste.
Activate Phyrexian Altar by sacrificing Dusk Legion Sergeant, adding .
When Dusk Legion Sergeant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Repeat from step 2.

In which brackets is this combo allowed, per Spellbook's Exhibition tier?

1–2 · Exhibition & Core

Allowed in this bracket.

3 · Upgraded

Allowed in this bracket.

4–5 · Optimized & cEDH

All combos are allowed.