You can recover one of your dragons that got removed, or you can consistently degrade all of your opponents turn after turn
For example, in Modern, Scapeshift is lethal once the opponent hits seven lands, so rather than casting your discard on Turn 1, it might be better to wait until the turn before your opponent is going to kill you to give your opponent more time to draw into their key spell
Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.) Except for its color, the token copies exactly what was printed on the original creature and nothing else (unless that permanent is copying something else or it is a token
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Buster Sword feels like a strong option for grinding value
Flying Whenever you cast a Spirit or Arcane spell, target creature gains fear until end of turn