Build in some ways to increase your mana pool, remove early threats, and play some early creature cards to force your opponent to use up their removal spells
There are some massive sorceries that are already often game-ending and will be that much better by being copied, like Time Warp and similar extra turn effects
5/5 Illustrated by Square Enix Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Yeah, that's going to be fun to deal with
If your opponent has a character that really threatens you or any of your key characters, you can bring Yzma out to remove them and the game may end before that character sees the light of day again.
Pitching this card from your hand and paying two mana to nab any Wizard you want from your library is tremendous utility, and keeping this card in hand for special occasions can sometimes spell the difference between utter defeat and clean victory