Cheapest priced copy (Bloomburrow): $0.49 at Card Kingdom, near mint, their price list as of .
Serra Redeemer 
Creature — Angel Soldier · 2/4 · Rare · Dominaria United · #282
Flying
Whenever another creature you control with power 2 or less enters, put two +1/+1 counters on that creature.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $0.49 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Bloomburrow | 387 | Rare | $0.49 | — |
| Dominaria United | 282 | Rare | $0.49 | $2.49 |
| Dominaria United | 423 | Rare | $0.99 | — |
One ruling from Wizards of the Coast
- 9 September 2022Serra Redeemer's second ability checks the power of a creature only at the moment it enters the battlefield. If it enters with counters, those counters are included. If that creature's power is less than 2 when it enters the battlefield but becomes greater than 2 after the ability triggers, you will still put two counters on it.