Bear Umbra is arguably best in class for this, and I find myself struggling not to shortlist it every time I build a green deck
Their visual novelty was seen as a big plus, and the fact that one card had two different spells on it, each with their own name, was seen as exciting new mechanical space

Abyssal Harvester Adagia, Windswept Bastion Adorned Pouncer Altar Ibn-La'Ahad Angel of Sanctions Anikthea, Hand of Erebos Anointer Priest Applied Geometry Arboreal Alliance Arcane Artisan Ardyn, the Usurper Arna Kennerd, Skycaptain Artificer Class Ashling's Command Ashling, the Limitless Assemble from Parts Auton Soldier Aven Initiate Aven Wind Guide Awaken the Maelstrom Back from the Brink Banshee of the Dread Choir Battle for Bretagard Benthic Anomaly Biowaste Blob Blade of Selves Bloodforged Battle-Axe Blue Sun's Twilight Bramble Sovereign Brenard, Ginger Sculptor Brigid's Command Broodbirth Viper Cabaretti Confluence Cackling Counterpart Cadric, Soul Kindler Calamity, Galloping Inferno Calix, Guided by Fate Caller of the Pack Caller of the Untamed Caretaker's Talent Caught in a Parallel Universe Champion of Wits Chandra, Flameshaper Chrome Dome City of Death Clone Legion Cogwork Assembler Coiling Rebirth Colorstorm Stallion Compy Swarm Conclave Evangelist Copy Catchers Corporeal Projection Council of Reeds Coursers' Accord Court of Vantress Croaking Counterpart Cursecloth Wrappings Cybermen Squadron Dalek Squadron Dance of Many Delina, Wild Mage Determined Iteration Dino DNA Dollhouse of Horrors Donatello, Gadget Master Dreadfeast Demon Dreamstealer Druid's Deliverance Dual Nature Duke Ulder Ravengard Dutiful Replicator

BSJ and you each agree that the arbitrator may not consolidate more than one persons claims and may not otherwise preside over any form of a representative or class proceeding, and that any dispute resolution proceedings will be conducted only on an individual basis and not in a class, consolidated or representative action
Court of Grace Court of Grace is another Court on the weaker side since it needs the monarchy to really shine