When it comes to my Cube, I have a little over a third Trainer, Supporter, Stadium, and Energy cards with the remaining two thirds being Pokemon
Since theyre all interactive it gives us an easy axis to judge them against
While it takes a lot of green mana, it's possible that you can cast Nature's Rhythm to tutor out a combo piece and then tap that combo piece to help pay the harmonize costs on Nature's Rhythm to snag your second combo piece and win the game
Other blink cards such as Flicker can also target enemy creatures (though not at instant speed), which can be a very valuable play at the right time
This is because Mind Grind, at its core, comes down to chance
While it cant bounce your artifacts, it can bounce your other bounce creatures, like Glint Hawk and Kor Skyfisher