PLEASE NOTE: The new tariffs are causing a 15-20% increasing in pricing on Japanese product because of import costs
Dragon Fire is an amazing opportunity to clean the board of someone that has been a thorn in your side, but its only a one-time use
Kitting out your deck with snow lands is an excellent way to ensure itll always have deathtouch
I think you're right in that you should only be able to control one of these at a time, so planeswalk should probably include if another plane is under your control, or similar effect, otherwise you could target and steal the opponent's plane and have two
On a similar note, Lost in the Maze and The Wandering Rescuer give us the power to dodge all future targeted removal by crewing vehicles with the targeted creature in response
It brings a lot more weight to cards like Timely Reinforcements, Nomads' Assembly, and Captain of the Watch