Since this card returns and doesnt destroy, you can avoid a whole ton of cards that have an effect when targeted, destroyed, or banished
What affects the value of Giratina VSTAR
Mystic Snake + Frilled Mystic Frilled Mystic and Mystic Snake are just solid two-for-ones
You're always going to have to put a bit of work in to land a hit with this commander, but once you get the ball rolling it's going to move very very fast
Its especially aggravating as the March of the Machine: Aftermath set itself is a fascinating experiment outside of this
If this is done in such a way that a loop is formed and an effect can be repeated ad infinitum, generating infinite mana, dealing infinite damage, creating infinite creatures tokens - whatever the case may be - then voila