Sealed vs other games
A Sealed IKZ is a tapped IKZ resource that cannot be untapped until after your next Reset phase (your start-of-turn untap). Mirrored Reflection plays a Water entity costing up to 5 for 3 IKZ now (while letting your opponent play an entity costing 5 or less into their Alley), then Seals 2 of your tapped IKZ so they skip your next Reset phase.
Is it like…
Overload in HearthstoneMostly
Mostly. Both let you play an undercosted card this turn by locking mana or IKZ through your next turn’s refresh.
What’s the same and what’s differentLands that don’t untap during your next untap step in Magic: The GatheringMostly
Mostly. Both keep spent resources tapped past your next untap phase as a drawback for an above-curve effect, except Sealed also blocks manual untap effects until after that Reset phase.
What’s the same and what’s different“Will not become active in the next Refresh Phase” on DON!! in One Piece TCGPartly
Partly. Both freeze rested resource cards through one refresh phase without removing them permanently, though One Piece uses Refresh-skipping DON!! locks offensively against opponents while Sealed IKZ is a self-inflicted cost that also blocks manual untaps until after Reset.
What’s the same and what’s different