arkham horror card game player mat Horror: Investigator – Asmodee USA Playmat for Arkham Horror the

The introduction of Magic: The Gathering Planeswalker coincided with the storyline in MTG's lore

When this card is destroyed and sent to the graveyard you can pay 800 Life Points: Add one "Sludge" from your graveyard or deck to your hand

It lets you not only boost your own allies and give them attack buffs but also nerfs your opponents chances of mounting a substantial counterattack if you reveal an Azula: Verge of Insanity card from your hand

Sort of how mountaincycling is a specific version of the broader cycling mechanic

With a non-creature you could also build around, artifact, enchantments or planeswalkers too (I did the latter here)