I've been trying to create The Death Star, but I have been having some Vorthos\Melvin issues with the design of a super powerful weapon the size of a small moon.
Initially I had:
The Death Star Legendary Artifact - Vehicle (M)
The Death Star can't gain indestructible. - A nod to it's exhaust port issues and that it gets destroyed twice.
Flying, trample
When the Death Star attacks or blocks, destroy any number of target permanents with a combined mana value of X where X is its crew.
Crew X - this works with the design but bugs me on another level. Like, 1 crew could never fly the death star!
20/3 - another nod to its weaknesses.
There are a bunch of issues with that design, and I realized I'd rather have the Death Star as something truly terrifying when your opponent fields it, rather than the more tongue in cheek version above.
So next was:
The Death Star Legendary Artifact - Vehicle (M)
Flying, trample, annihilator 3
Crew 7
12/12
But that means bringing back annihilator as a one off, plus 12/12 seems, smaller? than the death star should be. And it seems too vanilla for such a marque card.
So then it was:
The Death Star Legendary Artifact (M)
The Death Star enters tapped.
, sacrifice The Death Star: Destroy all permanents.
I did away with it being a Vehicle at all and just made it a tool of destruction, but it seemed to broad now. A super Nivens Disk also seemed, while splashy, sort of boring.
The Death Star Legendary Artifact (M)
Flying, trample
At the beginning of your upkeep, you may destroy target land. If you do, destroy each creature that shares a color with a color of mana it can produce.
15/15
The Death Star has cleared the planet.This is where I have landed. It's not a Vehicle, it has huge numbers, and the opponent has a chance to deal with it before it starts seriously smashing. It can destroy lands and all the creatures living on it flavourfully. This also prompted the creation of this card:
Exhaust Port Sorcery (C)
Destroy target permanent that was dealt damage by an artifact this turn.
Use the force, Luke.