Cheapest priced copy (Commander 2020): $0.59 at Card Kingdom, near mint, their price list as of .
Glademuse 
Creature — Beast · 2/4 · Rare · Commander 2020 · #60
Whenever a player casts a spell, if it's not their turn, that player draws a card.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2020 | 60 | Rare | $0.59 | — |
2 rulings from Wizards of the Coast
- 17 April 2020An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.
- 17 April 2020Players can cast spells and activate abilities after the triggered ability resolves but before the spell that caused it to trigger does.