Caretaker's Ally

Silver augment

Gain a random 2-cost champion now. Gain the same one again every time you level up.

Caretaker's Ally enables

Bench

The bench is the storage row off the board, with 9 slots by default.
Champion Grant

A champion grant is a champion handed to you that is yours to keep.

Caretaker's Ally benefits from

Xp

XP is the player-side progression resource.