Cognitive Overload

Gold augment

Gain 7 gold, 1 2-star 1-cost champion, 1 2-cost champion, 2 3-cost champions, 1 XP, and 1 Shop reroll.

Cognitive Overload enables

Gold

Gold is the player-level economy resource.
Xp

XP is the player-side progression resource.
Reroll

Reroll is the shop action that throws away the champions the shop shows and draws a new set.
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.
Star Level

Star level is how far a champion has been upgraded, drawn as stars over its portrait.