This card is great. 1 effective resource to shut down most minions, for an aspect that needed more options against minions. It sometimes helps if the hero has retaliate so that the enemy kills itself over a few rounds (e.g. if it has scheme more than 0 or attack more than 2), but still good without retaliate as a super cheap answer to minions.

In my opinion, the best aspect card in the game. I don't like to call cards staples, but this fits in nearly any deck. And even if you have a perfectly fine 40 card deck and you play a scenario with a few 2 ATK non-guard Minions with a nasty when defeated effect or something like that coughthanos, tower defense,cough, you can just throw this card in and it will help a lot. Even if it just saves you a basic attack for 2, it's still practically 2 damage for 1 ER, and perfectly on curve. I also love it for Tigra to just collect the minions and keep them shut down. Hunted even ignores guard, so the weak, guard minions that are nearly in every scenario can be targeted. But it's situational and not an energy resource for the protection cards that want one. It can happen, that there is no target or just a 4 ATK minion, that you would still need to kill.

Okay, I know this is a card with a niche. You have to be playing Protection and you need to take on a villain with some beefy minions.

Don't get me wrong, Pinned Down can effectively nerf a minion for a round without costing additional resources. But to make the most of it you want to drop it on a minion that swings for 2 or more. But in a game where card draw is king, you don't want to hold this in your hand waiting for a moment.

Instead of throwing your solid allies at some nuisance with retaliate, you can drop a Pinned Down and ignore it for a round or two until you have what you need to eliminate it through other means.