I love adding MH cards to Cubes, but ironically, I don't know if I love what they do to Modern itself
Loxi: Ninjas, rogues, you name it
That said, if Kalemne is the start of an Experience Counter-centric trend, then she could continue to rise for some time
Lore effect: upon entering or after your draw step, adds a +2/+2 bird token, boosting your board presence
Without a built-in way to passively generate energy counters, Liberty Prime, Recharged needs to focus on other sources for generation if we want to attack with it as often as possible
Strategic Planning This is a useful card, lets you get rid of something or stash it in the yard for recursion and you know exactly what's on top of your library, or can shuffle it away with crack lands