Here's a puzzle for Magic: the Gathering players out there. I feel that this puzzle is in the scope of the site, and is no different than other puzzles, e.g. chess, which require knowledge of the parameters of a game in order to solve. I'm adding the MtG tag since I hope to do more of these in the future. I've linked to cards so that you don't have to go look them up yourself. For those interested in learning the rules of Magic, see here and here.
This first one will be reasonably easy; I've tried to ensure that there is only one correct answer. Please don't post an answer unless it's distinct i.e. isn't just another answer but with mana tapped slightly differently or two spells cast in swapped orders if it doesn't affect the outcome. If I missed something, and there are multiple distinct solutions, I will accept the one that gets the most damage through.
It is Main Phase 1 of your turn. You've just drawn and haven't played a land for the turn. Defeat your opponent during this turn (before end of cleanup step). Provide the sequence of spells/game actions that you take to achieve the goal. Please be specific about mana usage / land tapping (feel free to keep a count of mana between steps)
Kiln Fiend (no summoning sickness)
1 Island, 2 Mountain all untapped
Your opponent's hand:
Your opponent's board: