Pop out tokens and Zendikons, Polymorph into Progenitus.

Duress and Mire's Toll gets rid of instants that will ruin your Polymorph (like Lightning Bolt, Doom Blade, Dispel). Dispel protects your Polymorph from being countered as well.

If you are unlucky enough to draw Progenitus, you can always Mire's Toll or even Blightning yourself.

Tricks: Put a Zendikon on a Grixis Panorama. Block with it, then pop it open before it dies to get your panorama back and use it again.