basic energy pokemon cards 7 RARE Holo Starfoil Promo Set. Authentic 012 / Common Card Type / HP / Stage Basic Psychic Energy 005 SVE

If you build the deck correctly with subsequent supportive attackers from the Fusion Strike series, then you have a way to quickly weaponise your Mew V Max and Genesect V so you can OHKO almost any Pokmon

And you can swing with your team, blink them out after damage is dealt, and then merely untap the so they can block, so you have a sort of pseudo vigilance

its a Heroes of the Realm card given to a WotC staff member to commemorate their work there

Excluding cards with indestructible, Heartless Act only comes up short against large Walking Ballistas, Scavenging Oozes that have already activated, and Humans that benefited from +1+1 synergies