First printed in Secrets of Strixhaven (2026)
All 3 prints
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Secrets of Strixhaven Promos (PSOS) #91p, 2026
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Secrets of Strixhaven (SOS) #326, 2026
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Secrets of Strixhaven (SOS) #91, 2026
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.
In the last 30 days 9.5% of Standard decks played it (39 of 410). Most played in Orzhov Lifegain. In the last 30 days 0.0% of Commander decks played it (1 of 6150). Most played in Sephiroth, Fabled SOLDIER.
Staple
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Standard staples:
main deck, 8% of decks (#58)
Black, Creatures, Recursion, Lifegain
Last 120 days of MTGO results and paper tournaments.
Combos
1 combo from Commander Spellbook.
- Infinite creature ETB, Infinite creature LTB…: Ashnod's Altar + Moseo, Vein's New Dean + Nim Deathmantle
Legality
Constructed
- Standard Legal
- Pioneer Legal
- Modern Legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Legal
- Historic Legal
- Timeless Legal
- Alchemy Legal
- Penny Dreadful Not legal
- Premodern Not legal
- Old School 93/94 Not legal
Singleton
- Gladiator Legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Not legal
- Tiny Leaders Legal
- Oathbreaker Legal
- Brawl Legal
- Standard Brawl Legal
- Competitive Brawl Legal
