Her +1 can be used to rebuy an ETB, but you can also use it to temporarily remove opposing creatures or artifacts, since they dont return until your opponents next end step
This card works best in EDH seeing as its not going to be nuked at first sight, and once you start to have 3-4 more lands than your opponent, youll be the top dog at the table
Head of the Class would fit best in an Orzhov (whiteblack) spellsmatter or heroicstyle deck that plays a high density of cheap instants and sorceries that target creaturessuch as protection spells, pump spells, or removal that can target your own creatureso you consistently trigger Repartee while also discounting a key spell each turn
The front of the card tends to be more important than the back, especially regarding centering, but both should be measured carefully
Damage Amplifiers Damage multipliers that double or triple the damage dealt (like City on Fire or Solphim, Mayhem Dominus do), and damage increasers that add extra damage (such as Torbran, Thane of Red Fell, Mechanized Warfare, and Fated Firepower) can also be recognized as replacement effects thanks to their instead wording