Gladiator is a brand new format on Magic Arena. The decks are 100-card singleton decks, similar to Canadian Highlander. Every card available on Arena is legal, except Oko, Thief of Crowns. It's just getting started as a format but it's a lot of fun.
This deck is focused on Goblin tribal and with a couple of key, new Goblins in M21 - Conspicuous Snoop and Brash Taunter, the deck becomes even more powerful than before. Although, there already a lot of solid Goblins in Historic. This deck can be quick and still go wide. It's a solid deck.
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This deck is a fun excuse to play five colours and to play human tribal. It's not always consistent, of course that's the nature of the format, but it is a blast to play. Sometimes it can stall out or get stuck on mana but it can sometimes play gloriously.