Moseo, Vein's New Dean
Legendary Creature — Bird Skeleton Warlock
Flying
When Moseo enters, create a 1/1 black and green Pest creature token with "Whenever this token attacks, you gain 1 life."
Infusion — At the beginning of your end step, if you gained life this turn, return up to one target creature card with mana value X or less from your graveyard to the battlefield, where X is the amount of life you gained this turn.
- CMC
- 3
- Mana cost
- Color identity
- B
- Rarity
- rare
- Set
- Secrets of Strixhaven Promos
- Price
- —
- EDHREC rank
- #8472
Moseo, Vein's New Dean puts a reanimation trigger on the board that other sacrifice loops can chain through repeatedly, and the real cost is measured in what you build around it. Pair it with Nim Deathmantle and you have a recursive engine that doesn't need an external graveyard to function — Blech, Loafing Pest decks figured this out fast, and inclusion rates above 60% confirm it.
Best Commanders
Commanders with the highest synergy

Blech, Loafing Pest
Blech, Loafing Pest runs Moseo, Vein's New Dean in nearly two-thirds of its builds because the two cards form a self-sustaining sacrifice loop — Blech generates the fodder, Moseo converts deaths into recursive value, and the engine snowballs without needing extra setup.

Betor, Ancestor's Voice
Betor, Ancestor's Voice wants every creature death to ripple outward, and Moseo, Vein's New Dean gives the deck a persistent reanimation layer that keeps threats coming back so Betor's triggers keep firing.

Dina, Essence Brewer
Dina, Essence Brewer drains opponents on every life-loss event, and Moseo, Vein's New Dean feeds that loop by ensuring creatures keep dying and re-entering so Dina's trigger fires as many times as the mana allows.

Amalia Benavides Aguirre
Amalia Benavides Aguirre needs creatures to explore repeatedly, and Moseo, Vein's New Dean provides the recursive body count that keeps Amalia's trigger chain alive through interaction and board clears.

Dina, Soul Steeper
Dina, Soul Steeper rewards life-gain events as much as life-loss, and Moseo, Vein's New Dean slots in as the engine that recycles creatures so Dina can keep generating both sides of that equation.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Moseo, Vein's New Dean is legal across every major constructed format — Standard, Pioneer, Modern, Legacy, Vintage, and Commander — and is only excluded from Pauper by rarity. In Commander it earns its slot cleanest, where the singleton constraint rewards engines that generate repeated value from a single card, and a 100-card graveyard ecosystem gives Moseo constant fuel. Constructed formats present a narrower window: Modern and Pioneer have faster, leaner sacrifice payoffs, so Moseo, Vein's New Dean is competing against speed rather than synergy. Legacy and Vintage have the raw power ceiling to abuse it, but also the redundancy to render it optional.
Key Combos
Combo lines featuring this card



Nim DeathmantleAshnod's AltarMoseo, Vein's New Dean
Infinite ETB; Infinite LTB; Infinite death triggers; Infinite sacrifice triggers
View on Commander Spellbook ↗Price Context
Current price
unknown tier
Current pricing data for Moseo, Vein's New Dean isn't available in this snapshot, so check Scryfall or Card Kingdom for live figures before buying or trading. Given the card's strong inclusion rate in Blech, Loafing Pest and related sacrifice shells, demand is real — pick it up before a price spike if you're building into those archetypes.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.