First printed in Dominaria United (2022)
Creature — Serpent
This spell costs 
less to cast for each instant and sorcery card in your graveyard.
Ward 
(Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
Afterward, a number of treatises on sea serpent morphology were swiftly revised.
5/5
- Illustrated by
- Vincent Christiaens
Legality
- Legal in
- Standard, Pioneer, Modern, Legacy, Vintage, Pauper, Future Standard, Historic, Timeless, Alchemy, Gladiator, Commander, Duel Commander, Pauper Commander, Oathbreaker, Brawl, Standard Brawl, Competitive Brawl
- Not legal in
- Penny Dreadful, Premodern, Old School 93/94, PreDH, Tiny Leaders
Rulings (2)
- Tolarian Terror's first ability can't reduce its cost below
. - To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Tolarian Terror). The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.
Prices
MTGO price: 0.002 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 |
|---|---|---|---|---|
| Foundations (FDN), Premier Draft | 52.2% | -2.4 | -0.6 | 54456 |
| Foundations (FDN), Sealed | 47.6% | -7.6 | -3.4 | 1686 |
| Dominaria United (DMU), Premier Draft | 57.0% | +0.6 | +1.8 | 137176 |
| Dominaria United (DMU), Sealed | 55.5% | -0.6 | +2.1 | 4195 |
- 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
