Umori companion causing validation failure
I just redeemed a rare wild for umori, the collector to use as a companion with my mutate deck.
Unfortunately, using it as a companion, with a deck containing only creatures and lands, causes the following error when trying to join a match (the deck builder/browser didn't indicate it was at all invalid)
"Invalid deck
Deck validation failed"
My deck list is as follows:
Companion
1 Umori, the Collector (MUL) 127
Deck
4 Pollywog Symbiote (IKO) 63
4 Swamp (ANB) 116
2 Sea-Dasher Octopus (IKO) 66
2 Dreamtail Heron (IKO) 47
3 Pouncing Shoreshark (IKO) 64
1 Archipelagore (IKO) 41
1 Dirge Bat (IKO) 84
5 Forest (ANB) 112
3 Insatiable Hemophage (IKO) 93
4 Chittering Harvester (IKO) 80
3 Boneyard Lurker (IKO) 178
5 Island (ANB) 113
1 Honest Rutstein (OTJ) 207
1 Goreclaw, Terror of Qal Sisma (MUL) 92
2 Thunderous Snapper (ELD) 215
4 Ilysian Caryatid (ANB) 98
1 Glowstone Recluse (IKO) 156
2 Auspicious Starrix (IKO) 144
1 Scute Swarm (ZNR) 203
1 Essence Symbiote (IKO) 149
4 Foreboding Landscape (MH3) 221
1 Clearwater Pathway (ZNR) 260
1 Shipwreck Marsh (MID) 267
1 Barkchannel Pathway (KHM) 251
1 Dreamroot Cascade (VOW) 262
2 Darkbore Pathway (KHM) 254
Sideboard
2 Essence Symbiote (IKO) 149
3 Mysterious Egg (IKO) 3
2 Cavern Whisperer (IKO) 79
1 Umori, the Collector (MUL) 127