Cheapest priced copy (Eternal Masters): $4.49 at Card Kingdom, near mint, their price list as of .
Brago, King Eternal 
Legendary Creature — Spirit Noble · 2/4 · Rare · The List · #EMA-198
Flying
Whenever Brago deals combat damage to a player, exile any number of target nonland permanents you control, then return those cards to the battlefield under their owner's control.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
6 printings · $4.49 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 516 | Mythic | — | — |
| Conspiracy | 41 | Rare | $4.99 | $8.99 |
| Eternal Masters | 198 | Rare | $4.49 | $10.99 |
| Kaldheim Commander | 82 | Rare | $4.99 | — |
| The List | EMA-198 | Rare | $4.99 | — |
| Secret Lair Drop (Miku, Queen Electric) | 1601 | Rare | $15.99 | $15.99 |
3 rulings from Wizards of the Coast
- 10 November 2020You may exile and return Brago using its own ability.
- 10 November 2020Brago's last ability exiles and returns all the targets during the combat damage step, after combat damage is dealt. You can't target any creature that didn't survive combat.
- 10 November 2020If you exile an Aura with Brago's last ability, the Aura's owner chooses what it will enchant as it comes back onto the battlefield. An Aura put onto the battlefield this way doesn't target anything (so it could be attached to an opponent's permanent with hexproof, for example), but the Aura's enchant ability restricts what it can be attached to. The Aura can't enter the battlefield enchanting a permanent that enters the battlefield at the same time. If the Aura can't legally be attached to anything, it remains exiled.