Time Sigil Ramp

This decks ramps a large number of Sigils with Grand Builder,Grodov Evangel,Trail Maker,Unfamiliar Interloper,Bhodi & Rox Forever and Time Symbol.
This powers Timekeeper,Worldly Cleric, Determination Engine and Ubsat the Savior.

Prism Golem,Javan, the Steel Crest and Veteran Mercenary often start to attack from round four onwards, followed by Timekeeper. Maybe, I should add Ixtol, Champion of Grodov though it doesn't build on the number of Time sigils but power.

The deck can still be optimized, but works remarkably well already.
Prosperity of the Reach almost never triggers as the only way to get 10 units into the void is with Sea of Teeth.
I could also add surge cards Omenscar Wurm, Wandering Wisp and Battery Mage.