Artwork unavailableSerpent
English Oracle text
This creature can't attack unless there are five or more cards in your graveyard.
Cycling (, Discard this card: Draw a card.)
5 / 5
虽然罗夏河为拿塔蒙带来生机，它从不失凶险。除非你的坟墓场中有五张或更多牌，否则河流巨蛇不能攻击。
循环（，弃掉此牌：抓一张牌。）
Once River Serpent has attacked, it will remain in combat even if the number of cards in your graveyard becomes four or fewer.
Legality follows the dated Scryfall catalog snapshot.
For draft and prerelease, check the event’s release and rules. Missing statuses stay unavailable.
Official Magic rules| Format | Status |
|---|---|
| Standard | Not legal |
| Pioneer | Legal |
| Modern | Legal |
| Legacy | Legal |
| Vintage | Legal |
| Commander | Legal |
| Oathbreaker | Legal |
| Alchemy | Not legal |
| Historic | Not legal |
| Brawl | Not legal |
| Comp. Brawl | Not legal |
| Timeless | Not legal |
| Pauper | Legal |
| Duel | Legal |
For draft and prerelease, check the event’s release and rules.
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