About Invasion of Segovia // Caetus, Sea Tyrant of Segovia
Invasion of Segovia // Caetus, Sea Tyrant of Segovia is a Magic: The Gathering card, a rare blue battle from March of the Machine (MOM), an expansion set released in April 2023. It is collector number 63 in that set, with art by Edgar Sánchez Hidalgo. It costs {2}{U} (two generic and one blue mana) to cast, for a mana value of 3. It has 4 defense. Its colour identity is blue. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless, Gladiator and Penny Dreadful. It has been printed in 2 sets. The latest aggregated market price for this printing is $0.96 (normal finish, as of 2026-11-03).
Card text
(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, create two 1/1 blue Kraken creature tokens with trample.
Market price
Latest aggregated market price for the normal finish of this printing: $0.96 (as of 2026-11-03).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Invasion of Segovia // Caetus, Sea Tyrant of Segovia by format. Formats in which it is not legal are not listed.
Other printings of Invasion of Segovia // Caetus, Sea Tyrant of Segovia
Invasion of Segovia // Caetus, Sea Tyrant of Segovia has been printed in 2 sets. The other printings are listed newest first, with the rarity and release year of each.
Printing
Rarity
Year
March of the Machine Promos (PMOM) #63s
Rare
2023
Official rulings
The 8 most recent official rulings for Invasion of Segovia // Caetus, Sea Tyrant of Segovia, newest first.
Tapping an untapped creature that's attacking or blocking to convoke a spell won't cause that creature to stop attacking or blocking.
When calculating a spell's total cost, include any alternative costs, additional costs, or anything else that increases or reduces the cost to cast the spell. Convoke applies after the total cost is calculated. Convoke doesn't change a spell's mana cost or mana value.
You can tap any untapped creature you control to convoke a spell, even one you haven't controlled continuously since the beginning of your most recent turn.
Tapping a multicolored creature using convoke will pay for {1} or one mana of your choice of any of that creature's colors.
Because convoke isn't an alternative cost, it can be used in conjunction with alternative costs.
If a creature you control has a mana ability with {T} in the cost, activating that ability while casting a spell with convoke will result in the creature being tapped before you pay the spell's costs. You won't be able to tap it again for convoke. Similarly, if you sacrifice a creature to activate a mana ability while casting a spell with convoke, that creature won't be on the battlefield when you pay the spell's costs, so you won't be able to tap it for convoke.
If a permanent that is represented by a transforming double-faced card becomes a copy of a Siege, it will be exiled as that Siege's triggered ability resolves, then it will be cast transformed. Note that this applies only to transforming double-faced cards, not to modal double-faced cards that can normally be played using either face.
If a battle that's being attacked somehow stops being a battle, it is removed from combat. Similarly, if its controller changes in the middle of combat, it is removed from combat.