booster box set pokemon B&W Base Pokémon Fanatics Collect | It took

and if you do, change the attack target to this card

You may choose 1 "Arken" from them and send it to the bench

When this card is Normal Summoned: You can add 1 face-up DARK Pendulum Monster from your Extra Deck to your hand

Each of these monsters have two once per turn activated effects: one relating to Special Summoning a Level 4 or lower "tri-type" monster (save for "Shuraig" and "Arms Bucephalus II" whom instead have an effect to banish a card(s) on the field, and "Arms Mouser" which triggers on summon and sends from Deck/Extra Deck to GY), and one that is optionally triggered when the monster is sent to the GY

The issue with that background though is that its entirely linked to your commander

Which keywords are doing the heavy lifting