Elhain

Dragon food at the start of the game, poor Elhain doesn't start off giving players a great first impression. Her kit (the sum of her abilities) is mainly built to hit hard. Which lends well to the arena at the start of the game. She is one of the few champions that doesn't need accuracy.

All three of her abilities can hit multiple times, punishing foes, even if only on a single-target. Her A2 only needs 85% crit rating to hit the 100% cap. All three abilities hit pretty hard relatively speaking with good multipliers.

All-in-all she is a progression champion that won't carry you through too far into the game but will be a reliable arena nuker for a while. Still at the beginning of the game she will be useful all over the game from pve to pvp for a while. Not requiring any accuracy makes her one of the easiest champions to build up of the starters.