Metallic Sliver Slivers form a tribal archetype where each one provides a special ability to the hivemind of other slivers
So, unless we draw our free burn spells, we tend to end up about one spell short of winning before our opponent can combo off
Number 39: Utopia, Emissary of Light/Gagaga Magician Gagaga Magic/Gagaga Girl Cell Phone Subtraction, inspired by Yumas cards from Yu-Gi-Oh
They are also like card draw spells in that they don't advance your board position at all which means you only want to cast them when things are stable or easily recoverable
Some cards in other sets refer to a card, spell, or permanent that "has an Adventure." This refers to a card, spell, or permanent that has an adventurer card's set of alternative characteristics, even if they're not being used and even if that card was never cast as an Adventure
It's a popular commander for those seeking out a combo win, as well as players who just want to jam a bunch of silly squirrels in their Commander deck