How competitive is this blue draw-go deck in Premodern MTG?

4 Morphling

4 Thieving Magpie

4 Masticore

4 Man o' War

4 Echo Tracer

4 Powder Keg

4 Counterspell

4 Forbid

4 Anul

4 Mishra's Factory

4 Rishadan Ports

16 Islands

Sideboard: (Not sure yet)

4 Nevinyraal's Disk

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This deck has plenty hate for Goblins and Elf decks. It also has some hate for dreadnought due to keg and the bounce creatures.

Rishadan Port helps screw over enemy decks which rely on Man-lands.

How competitive is this blue draw-go deck in Premodern MTG?
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