Oftentimes, it won't matter which creatures are saved because players will be eliminated
It provides Psychic Energy, and anytime the Pokemon is attached to is damaged, it puts 2 damage counters on the Attacking Pokemon (so long as it was the Active Pokemon) This may seem incredibly minor at first glance, but Pokemon is a game of inches
Let's unpack this card line by line
Whenever Storrev, Devkarin Lich deals combat damage to a player or planeswalker, return to your hand target creature or planeswalker card in your graveyard that wasn't put there this combat
We don't anticipate many players holding back on ramping just because you'll get to ramp too (as we mentioned, Magic players are greedy.) Ah well, whatever the reason, it has the ability, so perhaps it can pick off a 1/1 token for you