According to the rules the process of casting creature cards (or any other non-land cards) consists of the following stages: you put a creature card on the stack, define its total casting cost and it locks in, then you get a chance to activate mana abilities (but only if the total cost requires mana), and, finally, you pay the cost
But because historic permanents are so common, this card will likely end up being pretty cheap to play
Into the West Though part of me is a little disappointed that my lifes work making this EDH deck has been for nought, I am quietly excited for the prospect of Lord of the Rings -themed cards
This pick may look on the obvious side, because Im taking the powerful mythic, but I assure you that its closer than it looks
Pick a commander, draft a list with the AI deck builder, tune the curve in the deck analyzer, and price out your upgrades on the card pricing tool