It's not the best choice right now (especially when Tera Charizard Ex exists), but it's far from a bad one
While this isn't often seen directly ending games in these lists it is often the card that put the game out of reach for the opponent
Akroma, Angel of Wrath Akroma, Vision of Ixidor Angry Mob Appeal // Authority Baffling End Bant Battlemage Bringer of the White Dawn Concerted Effort Devouring Sugarmaw Elder Land Wurm Firehoof Cavalry Heroic Charge Iron Tusk Elephant Jhovall Rider Kenrith, the Returned King Kenrith, the Returned King Lancers en-Kor Leonardo, the Balance Mirror-Sigil Sergeant Moorish Cavalry Noble Elephant Odric, Lunarch Marshal Prized Elephant Salvation Colossus Thraben Militia Thunderous Orator War Elephant Wayward Angel Zetalpa, Primal Dawn
Whenever Rolling Hamsphere attacks, create three 1/1 red Hamster creature tokens, then it deals X damage to any target, where X is the number of Hamsters you control
not only does it generate ridiculous amounts of mana, but it exploits powerful draw engines like Curiosity and Tandem Lookout