I would play all 8 umbras if i was you, but if you only wanna run 6, I'd run 4 Spider Umbra and two Hyena Umbra

It has definately gotten better though

Agreed on the Spider Umbra > Hyena Umbra . As someone that played the bogle deck a bunch, Hyena Umbra is often the first cut when sideboarding.

On the surface first strike appears to the the more important combat mechanic, but for starters it's made a bit redundant with both Daybreak Coronet and Ethereal Armor also offering it. Reach is also often times incredibly relevant too. Usually decks like UWRs only out is to race in the air and burn you out while keeping you off life gain, and certainly reach is extra important against affinity with all its evasive creatures to carry Cranial Plating . And Inkmoth Nexus shows up there and in infect and represents one of the few ways to kill you despite all the lifegain.

Yeah you are right about reach thx

With only 12 creatures, how often you you mulligan yourself to oblivion? I run a similar deck but decided to slot in 4 Silhana Ledgewalker just to help cut mulligans shorter.

I tryed Silhana and i have a 2nd version of this here on TO with 14 or even 16 but its just too slow for competitive play. I dont seem to have a problem with mulligans... Maybe im always lucky but you can still win this with a starting hand of 2 when u draw like ethereal armor and keen sense afterwards. But yeah ofc its risky.... and thats why its fun to play