Auntie Ool is easy to cast in Jund, and has a relevant Ward cost that synergizes with what youre doing in your deck
Rampage made a creature bigger if it got blocked by more than one creature, and Bands With Other was a restrictive form of the Banding mechanic that only allowed a creature to band with something with the same type it has

Alirios, Enraptured Anax, Hardened in the Forge Aphemia, the Cacophony Arasta of the Endless Web Ashiok, Nightmare Muse Ashiok, Sculptor of Fears Athreos, Shroud-Veiled Atris, Oracle of Half-Truths Calix, Destiny's Hand Callaphe, Beloved of the Sea Dalakos, Crafter of Wonders Daxos, Blessed by the Sun Elspeth, Sun's Nemesis Elspeth, Undaunted Hero Erebos, Bleak-Hearted Eutropia the Twice-Favored Gallia of the Endless Dance Haktos the Unscarred Heliod, Sun-Crowned Klothys, God of Destiny Kroxa, Titan of Death's Hunger Kunoros, Hound of Athreos Nylea, Keen-Eyed Nyx Lotus Polukranos, Unchained Purphoros, Bronze-Blooded Renata, Called to the Hunt Shadowspear Siona, Captain of the Pyleas Taranika, Akroan Veteran Thassa, Deep-Dwelling Thryx, the Sudden Storm Tymaret, Chosen from Death Uro, Titan of Nature's Wrath

This is to say that, despite the cost that each draw minimally impacts the composition of the rest of the deck, this deck probably has better mana than a 60-card deck with one less color (Im not sure how problematic needing to fetch four colors instead of three will actually be to how games play out)
Opposition Full Art by Svetlin Velinov
I could see this being your engine to connect with your other krakens like Spawning Kraken, but not much beyond that