Summon: You may discard a card to give one of your other units +1/+1 and Overwhelm. If it's a Dinosaur, it gets +2/+2 and Overwhelm instead.
Card sounds may differ from in-game as they get updated.
Overwhelm - A unit or spell with Overwhelm will deal any excess damage to your opponent on your turn (does not work while blocking).
Summon - Does something when played