Id play this card to strengthen the allies at my disposal and alongside cards that grant allies lifelink or double strike
"Anatomy of a Magic Card"
In February 2021, an example graded Near Mint 7 by a different third party grader realized $375,000
Each one has a strong questing value that forces opponents to challenge or risk falling behind, and then once challenged and/or banished, their effects activate drawing you cards, forcing opponents to discard or return a character to their hand, and more
Nico Robin OP09-071 Character Purple 2 Cost 2000 Power Strike +1000 Counter [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Straw Hat Crew Illustrated by SHIE NANAHARA Block 3 Standard legal Extra legal
However, it does give you energy all on its own and because it also returns to your hand when you activate it, its going to keep giving you energy