Since Generation One, five more Eeveelutions have been unveiled and have become major chase cards throughout the games history, with Umbreon in particular being a fan-favorite with numerous big-money cards
Used together with "EB03-006 Nami", who does not have a [When Attacking] effect, [Rush] in to attack with your Leader's effect while keeping a [Blocker] ready
Master of Cruelties does this during combat, Vraska, Relic Seeker does it as a planeswalker ultimate, and Worldfire just does it
Or without having to pipe up and ask someone
Magic: The Gathering's Final Fantasy set is its best-selling one, and it's not surprising to see why
In Commander, resolving one of these bad boys (or having one put into play via more nefarious means, such as with Muxus) is often enough for you to pull well ahead of your opponents on board