Winter's Rest

A soft lock dressed as a two-mana Aura. The tap-on-entry gets the creature out of the way immediately, and the untap-denial clause is what keeps it there, but the whole prison rests on a conditional most blue removal never touches: you have to control another snow permanent, and the enchanted creature stays frozen only while that condition holds. Note the word "another," which does the balancing work. The Aura's own snow supertype counts for nothing toward its requirement, so the lock is never self-sustaining. You need a second snow permanent, minimum, and losing your last one lets the creature untap on its next turn, which turns a permanent answer into a leaky one and asks the deckbuilder to commit to the snow subtheme rather than splash it. Where earlier blue Auras neutralized a threat by pinning it tapped and asked nothing of the rest of your board, this one is itself a snow permanent, feeding every other card in the shell that counts snow while contributing nothing to its own condition. The design is a hybrid: half a Pacifism-style neutralizer that leaves the body on the battlefield (still triggering things that count creatures you don't control, still dying to your own board wipes), half a payoff woven into a snow identity that had lain mostly dormant for years before this era of design revived it. The friction is deliberate. Cheap, clean lockdown a mono-color deck could jam anywhere would be dull; tethering it to a snow permanent you must keep in play means the card only reaches full strength inside a deck built to hold that condition open.