Steel Seraph is a Magic: The Gathering card, a rare colourless artifact creature from The Brothers' War (BRO), an expansion set released in November 2022. It is collector number 38 in that set, with art by Denys Tsiperko. It costs {6} (six generic mana) to cast, for a mana value of 6. It is a 5/4 creature. Its colour identity is white. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless, Gladiator and Penny Dreadful. It has been printed in 3 sets. The latest aggregated market price for this printing is $2.24 (normal finish, as of 2026-11-12).
Card text
Prototype {1}{W}{W} - 3/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Flying
At the beginning of combat on your turn, target creature you control gains your choice of flying, vigilance, or lifelink until end of turn.
Market price
Latest aggregated market price for the normal finish of this printing: $2.24 (as of 2026-11-12).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Steel Seraph by format. Formats in which it is not legal are not listed.
Steel Seraph has been printed in 3 sets. The other printings are listed newest first, with the rarity and release year of each.
Printing
Rarity
Year
Magic Online Promos (PRM) #105620
Rare
2023
The Brothers' War (BRO) #311
Rare
2022
The Brothers' War Promos (PBRO) #38p
Rare
2022
The Brothers' War Promos (PBRO) #38s
Rare
2022
Official rulings
The 8 most recent official rulings for Steel Seraph, newest first.
A prototype card is a colorless card in every zone except the stack or the battlefield, as well as while on the stack or the battlefield if not cast as a prototyped spell. Ignore its alternative characteristics in those cases. For example, while it's in your graveyard, Blitz Automaton is a colorless creature card with mana value 7. It can't be the target of Recommission, a spell that targets an artifact or creature card with mana value 3 or less in your graveyard.
Casting a prototyped spell isn't the same as casting it for an alternative cost, and an alternative cost may be applied to a spell cast this way. For example, if an effect allows you to cast an artifact card without paying its mana cost, you could either cast Blitz Automaton normally, or as a prototyped spell.
If an effect copies a prototyped spell, that copy (as well as the token it becomes on the battlefield) will have the same characteristics as the prototyped spell. Similarly, if an effect creates a token that's a copy of a prototyped permanent or causes another permanent to become a copy of it, the copy would have the same characteristics as the prototyped permanent.
Regardless of how it was cast, a prototype card always has the same name, abilities, types, and so on. Only the mana cost, mana value, color, power, and toughness change depending on whether the card was cast as a prototyped spell.
The prototype ability functions in any zone that the spell could be cast from. For example, if an effect allows you to cast artifact spells from your graveyard, you could cast a prototyped Blitz Automaton from your graveyard.
When cast as a prototyped spell, that spell has the mana cost, power, and toughness characteristics shown in its colored, secondary text box rather than the normal values of those characteristics. Its color and mana value are determined by that mana cost. The permanent that spell becomes as it resolves has the same characteristics. If the spell leaves the stack in any other way, or the permanent it becomes leaves the battlefield, it immediately resumes using its normal characteristics.
When casting a prototyped spell, use only its prototype characteristics to determine whether it's legal to cast it. For example, if Blitz Automaton is exiled with the last ability of Chandra, Dressed to Kill, you would be able to cast it for {2}{R} (because it's a red spell), even though you wouldn't be able to cast it as a colorless spell for its normal cost.
You choose the target creature as you put Steel Seraph's triggered ability on the stack. You choose which ability that creature gains as the ability resolves.
Similar cards
Other artifact creature cards with a white colour identity, ranked by how often they appear in Commander decks.