A worthy ending to the main sets of tis era.
This time, there are three 1-mana red instants naturally, and four if you count Adventures, and since all the others are quite useful, it's a bit questionable if this one will see much play
If an Active Pokmon is near a knock out, for example, players could shift all its energy to another Pokmon so the replacement is immediately ready to fight next turn, or transfer energy the opposite way to allow it to retreat and not damage the player
That diversification matters
Sounds exhausting, doesn't it
Though its a pricey (in real dollars) ask, Lions Eye Diamond and Auriok Salvagers will give you not only infinite mana, but infinite 2/2 Necron Warriors