He grumbled something else unintelligible
Number 35 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (1/25/2019) If the target creature is an illegal target by the time Code of Constraint tries to resolve, the spell doesn't resolve
If you really and truly want to stop your opponent from casting creature spells for a single turn (which is all that Aether Storm will last), you could look at Cease-Fire, Orims Chant, Silence, Brand of Ill Omen, or Ward of Bones
We also wanted to make sure that the feature would work at scalean oft forgotten restriction for games like MTG Arena , especially if you're used to working on smaller and/or independent projects
Falling Under the Radar Despite being a fun Commander with some powerful synergies and combos available, Riku remains quite underplayed
It still taps for colorless, which is nice, but its almost worse than a random basic at that point