horror cards mtg Subtype: Horror, Colors: Blue, Black, 11 this creature deals 1 damage to any target. MTG Magic the Gathering Vile

(This is because the ability starts with the word "at".) While it's not very usual for this to have any effect on anything, there are some cases where it does

Better yet, most of these combos will be Standard legal

But Greg, Ariel is a Super Rare and Gaston is an Uncommon, so it should be better. While the rarity of a card certainly can play a part in its value on the table, its not always 100% the case

If Syr Vondam, Sunstar Exemplar leaves the battlefield at the same time as one or more other creatures you control die or are put into exile, its first triggered ability will trigger for each of those other creatures

While older print runs can become scarcer over time, card demand usually hinges on iconic characters, meta importance, and overall popularity

Theres a reason I chose Blood Moon and Urborg, Tomb of Yawgmoth as examples here