What if we had an Arena mode similar to the 3v3 PvP in WoW

Although i don't play WoW myself a gamemode that is purely focused on the fighting aspect of the game, with no farming and objective control would be interesting for a featured gamemode. Here's the idea

Each player recieves 20000 gold at the beginning of the match and are level 18 and players cannot go back to the fountain or buy new items and the base max health is doubled (and this does not affect champs that scale with max health such as Vlad, Mundo, and Garen). After 45 seconds teams are teleported to the arena which is basically the inner most circle area of the Ascension gamemode (or of dominion)

(Yes I understand that late game champs would be godly by this format but to be honest there is only so much that you can have in a 3 man comp that you could go for a 3 man assasin comp and kill that late game Kog'Maw)

Once all 3 players die on a team, all players are teleported back to the fountain, from this point players can rebuy items (items have 100% sell price).

First team to win 3 rounds win