First printed in Core Set 2019 (2018)
All 4 prints
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The Lost Caverns of Ixalan Commander (LCC) #256, 2023
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Core Set 2019 (M19) #200, 2018
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Core Set 2019 Promos (PM19) #200p, 2018
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Core Set 2019 Promos (PM19) #200s, 2018
Runic Armasaur 


Creature — Dinosaur
Whenever an opponent activates an ability of a creature or land that isn't a mana ability, you may draw a card.
In the last 30 days 0.3% of Commander decks played it (18 of 6150). Most played in Kinnan, Bonder Prodigy.
Legality
Constructed
- Standard Not legal
- Pioneer Legal
- Modern Legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Legal
- Timeless Legal
- Alchemy Not legal
- Penny Dreadful 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 Not legal
- Competitive Brawl Legal