Otherwise, this card would be broken because you would Exert for exile, and then when Exert wore off keep on exiling other creatures
It's reasonably powerful, but deck-destroying cards are just added as bonuses, so it's like compressing the deck
Lets take Primal Frenzy
There's also always the risk of not having enough follow-up to the Wire, or facing opponents who can cast their spells during upkeep, but often that is worth the risk
For reference, the appearance of this card changes whenever the attack power increases due to the effect of RCM (Royal Cookmate) monsters
Special Summon this card, and if you do, reduce that targets Level by the difference between its current and original Level, and if you do that, this cards Level become equal to the amount reduced