How would you deal a million damage?

Narcoticsagent

How would you deal with an enemy that had a million health? 

I have a 200 million power token to show off but I'm not sure how to include an image.

Nyarlathotep

I would say one cast of murder precharged and disabled while it's AIs turn is my prefered way to deal with shenanigans like that. 
  
And careful when doing such stuff. 
The maximum integer value for power is 2^31 -1 = 2,147,483,647.  If you exceed that, your creature becomes dead weight.

Mburn7

Use Etrata or Hour of Glory to instantly win

But seriously, 1 million power is nuts.  Best I've gotten is a few thousand before I got bored and stopped the loop.

Narcoticsagent

This is my deck (I call it "One Punch Man" in my favorite decks)

Planeswalker Karn

Deploy the gate watch
God eternal Rhonas 
Repeated reverberation 
Star field of nix
Sphinxes decree 
Settle the wreckage
High alert
Insidious will
Strategic planning 
Talent of the Telepath 

You just hide behind starfield shenanigans until you have 6 deploys or reverberations in your hand then you double the karn tokens power 18 times and bam millions of damage in about 10 minutes. 

Anyone else have any ideas for doing a million damage in a timely manner?

Laeuftbeidir

For a million damage, you need something that grows damage insanely. I'd use a graveyard fun deck, either with vizier of many faces (brought them up to around 8k damage in a normal loop) or beacon bolt. Or both.