While its certainly not for everyone, much of the aesthetic is going down well with fans, and people are getting excited
It doesn't copy any information about the object the card was before it was put into your graveyard
It's standing on two of its legs, and appears to be lobbing regular starfishes as if they're shuriken

Aerial Boost Ancient Imperiosaur Angel of Salvation Appeal to Eirdu Arboretum Elemental Artistic Refusal Astral Wingspan Autochthon Wurm Bennie Bracks, Zoologist Bloodline Bidding Burning Sun's Fury Caetus, Sea Tyrant of Segovia Calamity of Cinders Chant of Vitu-Ghazi Chief Engineer Chord of Calling City on Fire Clever Concealment Collective Inferno Collective Nightmare Complete the Circuit Conclave Equenaut Conclave Phalanx Conclave Tribunal Conclave's Blessing Covenant of Blood Crowd's Favor Cut Short Dazzling Theater // Prop Room Dazzling Theater // Prop Room Devouring Light Disruptor of Currents Eirdu, Carrier of Dawn Endless Obedience Ephemeral Shields Everything Comes to Dust Fallaji Wayfarer Feaster of Fools Feral Incarnation Flight of Equenauts Flockchaser Phantom Gather Courage Guardian of Vitu-Ghazi Halo Hopper Harmonized Crescendo Hoarding Broodlord Hogaak, Arisen Necropolis Hour of Reckoning Impervious Greatwurm Interdisciplinary Mascot Joyful Stormsculptor Kasla, the Broken Halo Kavu Primarch Knight-Errant of Eos Ledev Guardian Lethal Scheme Living Totem Lofty Dreams Loxodon Restorer March of the Multitudes Markov Baron Martyr's Soul Meditation Puzzle Meeting of Minds Merrow Skyswimmer Mob Nissa's Expedition Obelisk of Urd Omni-Changeling Ood Sphere Order of Sacred Dusk Overwhelm

Note that Arlinn is the only foil mythic Equinox, as well as being a Borderless Planeswalker, so she will be 50% more common than any other mythic from this set