cards that let you search your deck mtg Card makes for any card? Search your library for a creature card Custom Commander Deck*** Tiamat -

turning Mind-Flayer, the Shadow into a creature

One punishes blue decks, and the other punishes non-blue decksthe perfect storm

To this day, Kynaios and Tiro of Meletis remains one of the most balanced and definitive group hug commanders

Lots of legendary equipment grant ways to evade or trample through your opponents, so Kassandra could be a fairly interesting go-wide commander

They struggle to match damage against an aggressive deck like Red Deck Wins or White Weenies, especially when blocking

All these questions are hypothetical but having a card that is a true "one-of" does make for some odd circumstances, and I don't think it's out of the realm of possibility to have a situation similar to Charlie and the Chocolate Factory where the fraudulent Golden Ticket made people stop looking