This spell costs X less to cast, where X is your devotion to white. (Each W in the mana costs of permanents you control counts toward your devotion to white.)
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 Daybreak Chimera). The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
2020-01-24
wotc
The cost reduction ability reduces only the generic mana in Daybreak Chimera's cost. The colored mana must still be paid.
2020-01-24
wotc
Once you announce that you're casting a spell, no player may take actions until the spell has been paid for. Notably, opponents can't try to change by how much Daybreak Chimera's cost is reduced.
2020-01-24
wotc
Mana symbols in the text boxes of permanents you control don't count toward your devotion to any color.
2020-01-24
wotc
If you put an Aura on an opponent's permanent, you still control the Aura, and mana symbols in its mana cost count towards your devotion.
2020-01-24
wotc
If an activated ability or triggered ability has an effect that depends on your devotion to a color, you count the number of mana symbols of that color among the mana costs of permanents you control as the ability resolves. The permanent with that ability will be counted if it's still on the battlefield at that time.
2020-01-24
wotc
Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
2020-01-24
wotc
Colorless and generic mana symbols ({C}, {0}, {1}, {2}, {X}, and so on) in mana costs of permanents you control don't count toward your devotion to any color.
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Legal
Timeless
Legal
Gladiator
Legal
Pioneer
Legal
Modern
Legal
Legacy
Legal
Pauper
Legal
Vintage
Legal
Penny
Not Legal
Commander
Legal
Oathbreaker
Legal
Standardbrawl
Not Legal
Brawl
Legal
Alchemy
Not Legal
Paupercommander
Legal
Duel
Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Not Legal
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