Cheapest priced copy (Modern Horizons 3): $0.49 at Card Kingdom, near mint, their price list as of .
Laelia, the Blade Reforged 
Legendary Creature — Spirit Warrior · 2/2 · Rare · Secrets of Strixhaven Commander · #246
Haste
Whenever Laelia attacks, exile the top card of your library. You may play that card this turn.
Whenever one or more cards are put into exile from your library and/or your graveyard, put a +1/+1 counter on Laelia.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
7 printings · $0.49 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2021 | 53 | Rare | $0.59 | — |
| Commander 2021 | 380 | Rare | $1.79 | — |
| Commander Legends: Battle for Baldur's Gate | 801 | Rare | $0.69 | — |
| Modern Horizons 3 | 281 | Rare | $0.49 | $0.79Out of stock |
| Modern Horizons 3 | 368 | Rare | $2.29 | $6.99 |
| Modern Horizons 3 | 482 | Rare | — | — |
| Secrets of Strixhaven Commander | 246 | Rare | $0.49 | — |
7 rulings from Wizards of the Coast
- 7 June 2024Laelia's last triggered ability doesn't care which player is exiling cards from the library or graveyard. Cards put into exile from your library or graveyard for any reason, such as the delve ability, cause the ability to trigger.
- 7 June 2024If a player is instructed to exile cards from their library "until" a certain event occurs (for example, because of the triggered ability of a spell with cascade or discover), that player exiles those cards one at a time. Laelia's last ability will trigger that many times.
- 7 June 2024You'll still pay all costs for a spell cast this way, including additional costs. You may also pay alternative costs if any are available.
- 7 June 2024Cards exiled by Laelia, the Blade Reforged are exiled face up.
- 7 June 2024You must follow the normal timing permissions and restrictions while playing the exiled card. If it's a land, you can't play it unless you have land plays available.
- 7 June 2024If you play a card this way, it leaves exile and becomes a new object. If it returns to exile later in the turn, you can't play it again.
- 7 June 2024The last ability triggers only once for each time cards are put into exile from your library and/or graveyard, no matter how many cards were exiled at the same time.