He rewards you for playing low-cost characterseach time you play a 2-cost or less character, you can exert it to draw a card
These cards are insanely powerful, but they need entire decks to be dedicated around them, and many aren't worth it due to just how much support they need
Goading all your opponent's creatures through this spell turns the battlefield into pure chaos, with your opponents having to throw their creatures at each other, with the very real possibility of taking at least one out of the game if there are enough creatures on board
We had an Avenger, a Chalice, and of course his Mine, Power Plant and Tower
I'd also recommend stacking up on Forest of Vitality stadium card to evolve Bulbasaur on its first turn (but this can't be used on the first turn of the battle)
If you choose to discard a card, a second triggered ability goes on the stack and you will choose a target for it