Mull to your Dark Ritual if you can
With proper use of instant spells, you can transform Zenos on someone elses turn, and use a variety of combos to defeat someone, and thus, secure the game for yourself

Rime, Runerigus, Milcery, Alcremie, Falinks, Pincurchin, Snom, Frosmoth, Stonjourner, Eiscue, Indeedee, Morpeko, Cufant, Copperajah, Dracozolt, Arctozolt, Dracovish, Arctovish, Duraludon, Dreepy, Drakloak, Dragapult, Zacian, Zamazenta, Eternatus, Kubfu, Urshifu, Zarude, Regieleki, Regidrago, Glastrier, Spectrier, Calyrex, Sprigatito, Floragato, Meowscarada, Fuecoco, Crocalor, Skeledirge, Quaxly, Quaxwell, Quaquaval, Lechonk, Oinkologne, Tarountula, Spidops, Nymble, Lokix, Pawmi, Pawmo, Pawmot, Tandemaus, Maushold, Fidough, Dachsbun, Smoliv, Dolliv, Arboliva, Squawkabilly, Nacli, Naclstack, Garganacl, Charcadet, Armarouge, Ceruledge, Tadbulb, Bellibolt, Wattrel, Kilowattrel, Maschiff, Mabosstiff, Shroodle, Grafaiai, Bramblin, Brambleghast, Toedscool, Toedscruel, Klawf, Capsakid, Scovillain, Rellor, Rabsca, Flittle, Espathra, Tinkatink, Tinkatuff, Tinkaton, Wiglett, Wugtrio, Bombirdier, Finizen, Palafin, Varoom, Revavroom, Cyclizar, Orthworm, Glimmet, Glimmora, Greavard, Houndstone, Flamigo, Cetoddle, Cetitan, Veluza, Dondozo, Tatsugiri, Annihilape, Clodsire, Farigiraf, Dudunsparce, Kingambit, Great Tusk, Scream Tail, Brute Bonnet, Flutter Mane, Slither Wing, Sandy Shocks, Iron Treads, Iron Bundle, Iron Hands, Iron Jugulis, Iron Moth, Iron Thorns, Frigibax, Arctibax, Baxcalibur, Gimmighoul, Gholdengo, Wo-Chien, Chien-Pao, Ting-Lu, Chi-Yu, Roaring Moon, Iron Valiant, Koraidon, Miraidon, Walking Wake, Iron Leaves, Dipplin, Poltchageist, Sinistcha, Okidogi, Munkidori, Fezandipiti, Ogerpon, Archaludon, Hydrapple, Gouging Fire, Raging Bolt, Iron Boulder, Iron Crown, Terapagos, Pecharunt

With a better ability and a lower mana value, Thassa's Oracle makes the Maniac and Jace, Wielder of Mysteries things of brackets 1-3
Whenever this creature attacks, it gets +1/+0 until end of turn for each other attacking Goblin
Not only do they send cards to the graveyard, which synergizes exceptionally well with reanimation strategies or mechanics like delve, but they also have basic land types, making them fetchable with lands like Scalding Tarn