First printed in Final Fantasy (2025)
Legendary Artifact
Blue spells you cast cost 
less to cast.
If an opponent would mill one or more cards, they mill that many cards plus four instead.
, 
: Each opponent mills cards equal to the number of cards in your hand.
"Crystal of water, may you regain your light."
—Aria Benett
- Illustrated by
- Pablo Mendoza
Legality
- Legal in
- Standard, Pioneer, Modern, Legacy, Vintage, Future Standard, Historic, Timeless, Alchemy, Penny Dreadful, Gladiator, Commander, Duel Commander, Oathbreaker, Brawl, Standard Brawl, Competitive Brawl
- Not legal in
- Pauper, Premodern, Old School 93/94, Pauper Commander, PreDH, Tiny Leaders
Rulings (5)
- In the rare case where you control two of The Water Crystal, each opponent mills eight more cards than originally instructed. If you control three, your opponents mill twelve more, and so on.
- To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Water Crystal's first ability). The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.
- The cost reduction applies only to generic mana in the total cost of blue spells you cast.
- Some older cards have received errata to instruct a player to mill cards rather than to put the top cards of their library into their graveyard. Use the Oracle™ card reference at Gatherer.Wizards.com to determine whether a specific card has received such errata. As a rule of thumb, if an effect instructs a player to look at or reveal a card before it's put into its owner's graveyard, it's unlikely to have received errata.
- If an opponent is instructed to put a card into their graveyard without using the word "mill," The Water Crystal's second ability doesn't apply.
Prices
MTGO price: 0.006 TIX, the cheapest non-foil print (average sell price on GoatBots, 1 Nov 2026).
In Limited on MTG Arena
Win rates in Arena drafts and sealed, retrieved from 17Lands (CC BY 4.0).
| Set | GIH WR | vs set | IWD | Games |
|---|---|---|---|---|
| Final Fantasy (FIN), Premier Draft | 47.0% | -8.8 | -1.0 | 1258 |
- GIH WR
- win rate of the games in which the card was in the opening hand or drawn
- vs set
- points above or below the average win rate of all decks in the set
- IWD
- improvement when drawn: GIH WR minus the win rate when the card stayed in the library
- Games
- games in which the card was seen
Combos
13 combos, the most popular first:
- Infinite creature LTB, Infinite creature ETB…: Aethersnipe + Gwenna, Eyes of Gaea + The Water Crystal
- Infinite artifact ETB, Infinite storm count…: Orvar, the All-Form + The Water Crystal + View from Above (+ 1 other requirement)
- Infinite creature ETB, Infinite creature LTB…: Ashnod's Altar + Paradox Shaper // Omit Variables + Pitiless Plunderer + The Water Crystal + Wretched Throng
- Infinite creature ETB, Infinite creature LTB…: Ashnod's Altar + Pitiless Plunderer + Sundering Archaic + The Water Crystal + Wretched Throng
- Infinite artifact ETB, Infinite artifact LTB…: Banishing Knack + Corridor Monitor + The Water Crystal + Urza, Lord High Artificer
- Infinite artifact ETB, Infinite artifact LTB…: Corridor Monitor + Retraction Helix + The Water Crystal + Urza, Lord High Artificer
- Infinite creature LTB, Infinite creature ETB…: Ashnod's Altar + Pitiless Plunderer + Soldevi Digger + The Water Crystal + Wretched Throng
- Infinite creature LTB, Infinite creature ETB…: Ashnod's Altar + Pitiless Plunderer + The Water Crystal + Transplant Theorist + Wretched Throng
- Infinite creature LTB, Infinite creature ETB…: Ashnod's Altar + Pitiless Plunderer + The Water Crystal + Tomb Trawler + Wretched Throng
- Infinite creature LTB, Infinite creature ETB…: Ashnod's Altar + Malevolent Chandelier + Pitiless Plunderer + The Water Crystal + Wretched Throng
