Despite the effect of transforming Battle being a triggered ability , its controller exiles the permanent and then casts it without paying the mana cost , opening up space to interact with Battle on the stack with Make Disappear, or other counterspells, or even to bounce them on the stack, with Venser, Shaper Savant and the like
It's only been printed once, in the Ikoria Arcane Maelstrom precon deck, led by Kalamax, the Stormsire, and I've been a fan of Curious Herd for a long time
Its best place is at elf typal decks, and it can benefit from the buffs that type provides
The reason is explained in this article, but the general reason is that lands are best for casting your commander and ramping, outside of that they have very little function
At some point, you will be able to trade it away for more than that to some ecstatic Dragon-loving casual mage
Key Cards Dion, Bahamut's Dominant / Bahamut, Warden Of Light The commander of the deck, Dion, Bahamut's Dominant is great Knight support, giving them all flying during your turn
