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You can only activate 1 "Cybernetic Horizon" per turn

It becomes a giant blocker and instantly cripples an opponent as well

This card cannot be responded to by Monster effects, which stops most of the things that can negate it

If you have more than one of these effects on the field, the spell/cards controller selects how replacement events apply

It reins in some consistency engines and overdue traps, but leaves several format-defining cards unchecked

Neither player can activate a monster effect unless the number of monster effects that player has previously activated that turn is less than the number of monster card types currently on the field (Ritual, Fusion, Synchro, Xyz, Pendulum, and Link)