mtg mardu card draw Mardu, 20 cards Mardu Charm [Khans of Tarkir]

The Cloud, Midgar Mercenary card also doesnt really fit the narrative here, but it does have deliberate synergy with the Buster Sword, allowing you to search your deck for an equipment card, and his abilities also double-trigger (kind of like the Double Cut materia!)

It fits the character perfectly, it balances the cards power level and casting costs pretty well, and it can ultimately be broken in really absurd ways

For example: Ever As Before lets you choose any number of characters for both parts

In fact, it was the interest in the Mistform creatures that started the tribal boll rolling

In pretty much every game we played, both players inevitably ran out of cards in their hand and for the rest of the game they were at the mercy of their topdeck