Son Goku, Skills Improved (BT18-070) - Dawn of the ZLegends

[Auto][Limit 1] G, if you choose 1 of your green "Turtle School" "Son Goku : Childhood" cards with an energy cost of 1 and place it in its owner's Drop : When one of your cards attacks and KOs an opponent's Battle Card, draw 1 card, and play this card from your hand.
[Auto][Limit 1] When this card attacks and KOs a Battle Card, switch this card to Active Mode, and your opponent discards 1 card from their hand.