The clear target is Kathril, who then becomes a giant, face-smashing monster with any number of keyword abilities
Sell Your store handles the payment
Being able to cast one spell and get another for free helps counteract a few of the problems with this deck, notably its somewhat lacking land base for such big spells, and the deal is made even sweeter with some of the enters-the-battlefield effects you could be unexpectedly triggering
Note to new players, if you want to play Standard legal decks, look at Core Set 2021
But even if your opponent never draws an extra card, an instant-speed two-power that can also remove a one toughness creature is fantastic on its own
For our purposes, I also include red and green cards that have an adventure of the opposing color