I have fond memories of using Akiri, Line-slinger, Sword of Feast and Famine and Volcanic Offering to clear the way of Glacial Chasm and blockers to annihilate a Lord Windgrace player with Commander Damage early in the game
Out: Sublime Epiphany / In: Debt to the Deathless As I said prior for the Hypnotic Sprite, Im fine with the inclusion of counter magic if there is enough of it
Its building your speed from the get-go, and it has menace, so it'll probably help you damage your foes in the long run, especially on the early turns
Cards like Garbodor from Rage of the Broken Heavens [XY9], Vileplume from Bandit Ring [XY7], and Zoroark GX from Shining Legends [SM3+] are among the very best to ever be printed
In addition, many temporary card effects can only be activated by feeding a character card a certain amount of Don cards, which will inevitably lead to some tough decisions