Cost: 0.

Interrupt: When an ally with a weapon attachment upgrade makes an attack, discard Target Practice → that ally gets +2 ATK for that attack.

"Man, too easy." — Star-Lord
Star-Lord #17.
Target Practice

Every time I see this card, my brain interprets it as being an Event. It's not! It's a Support! Which means you can set it on the table and wait for the right moment to use it. Between a set of Target Practice and a set of Pulse Grenade, you could have most of your share of a villain's final stage dealt with the very same turn that stage begins.

Two damage for the cost of one card is pretty good just from a raw value perspective. Though the set of enablers is, at time of writing, fairly limited.

Fry · 239