Whenever chaos ensues, creatures you control that are white, blue, and/or black become artifacts in addition to their other types until end of turn. Then each artifact creature you control gains vigilance, menace, and lifelink until end of turn.
The set of artifact creatures affected by the chaos ability is determined as that ability resolves. Artifact creatures you begin to control later in the turn and permanents that become artifact creatures later in the turn won’t get the bonuses.
2023-04-14
wotc
The cost reduction can apply to alternative costs such as prototype costs.
2023-04-14
wotc
That ability can’t reduce the amount of colored mana players pay for a spell. It reduces only the generic component of that cost.
2023-04-14
wotc
If there are additional costs to cast an artifact spell, or if the cost to cast a spell is increased by an effect (such as the one created by Thalia, Guardian of Thraben’s ability), apply those increases before applying cost reductions.
2023-04-14
wotc
If a spell you cast has {X} in its mana cost, you choose the value of X before calculating the spell’s total cost. For example, if an artifact spell’s mana cost is {X}{X}, you could choose 2 as the value of X and pay {3} to cast the spell.
2023-04-14
wotc
Esper’s first ability doesn’t change the mana cost or mana value of any artifact spell. It changes only the total cost players pay.
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Not Legal
Timeless
Not Legal
Gladiator
Not Legal
Pioneer
Not Legal
Modern
Not Legal
Legacy
Not Legal
Pauper
Not Legal
Vintage
Not Legal
Penny
Not Legal
Commander
Not Legal
Oathbreaker
Not Legal
Standardbrawl
Not Legal
Brawl
Not Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Not Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Not Legal
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