Cheapest priced copy (Wilds of Eldraine): $0.35 at Card Kingdom, near mint, their price list as of .
Water Wings 
Instant · Common · Wilds of Eldraine · #77
Until end of turn, target creature you control has base power and toughness 4/4 and gains flying and hexproof. (It can't be the target of spells or abilities your opponents control.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Wilds of Eldraine | 77 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 1 September 2023Water Wings overwrites any previous effects that set the creature's power and/or toughness to specific values. Effects that otherwise modify its power and toughness will still apply no matter when they took effect. The same is true for +1/+1 counters.