First printed in Guilds of Ravnica (2018)
All 3 prints
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Ravnica: Clue Edition (CLU) #129, 2024
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The List (PLST) #GRN-95, 2019
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Guilds of Ravnica (GRN) #95, 2018
Cosmotronic Wave 
Sorcery
Cosmotronic Wave deals 1 damage to each creature your opponents control. Creatures your opponents control can't block this turn.
"This sort of innovation occurs when you set out to improve an electric tea kettle and misplace a decimal."
- Illustrated by
- Titus Lunter
Legality
- Legal in
- Pioneer, Modern, Legacy, Vintage, Pauper, Historic, Timeless, Penny Dreadful, Gladiator, Commander, Duel Commander, Pauper Commander, Oathbreaker, Brawl, Competitive Brawl
- Not legal in
- Standard, Future Standard, Alchemy, Premodern, Old School 93/94, PreDH, Tiny Leaders, Standard Brawl
Ruling (1)
- Because Cosmotronic Wave doesn’t change the characteristics of any permanents, the set of creatures affected by its second effect is constantly updated. Creatures that come under an opponent’s control later in the turn can’t block.
Prices
MTGO price: 0.002 TIX, the cheapest non-foil print (average sell price on GoatBots, 28 Oct 2026).