Standard Ranked puts you on the competitive ladder, using only the cards available in the Standard format at the moment, but if you have more cards from previous sets, choose Historic Ranked to have the freedom to use all the cards you want
Despite its 5-mana cost youre looking at 15+ red mana in your pool in the mid-to-late-game with multiple opponents
Or, if you believe in your ability to strike your opponent down quickly despite their hand, you could employ group hug artifact draw such as Howling Mine or Font of Mythos
Playing every battle on the first day can quickly become tedious or draining
At face value, Willbender can aim a removal spell targeting one of your creatures right back at someone else's, which saves one of your creatures and removes an opposing threat
She has flash herself and grants flash to all your green creature spells