Chimil, the Inner Sun
Legendary Artifact
Spells you control can't be countered.
At the beginning of your end step, discover 5. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)
Illustrated by
The Lost Caverns of Ixalan Commander#106MythicEnglishLegality
Rulings
Nov 10, 2023
A spell or ability that counters spells can still target spells that can't be countered. When that spell or ability resolves, the uncounterable spell won't be countered, but any additional effects of the countering spell or ability will still happen.
Nov 10, 2023
Chimil, the Inner Sun's first ability applies only while it's on the battlefield. While it's a spell, it can be countered.