We have another Tarkir: Dragonstorm card in All-Out Assault, a five-mana enchantment that provides your creatures with +1/+1 and deathtouch. With the addition of deathtouch, this makes combat so much easier, which compliments the second effect on the card. When this enchantment enters the battlefield, you gain an additional combat phase followed by an additional main phase, and you get to untap your creatures at the beginning of that combat step. That’s a lot of value (and damage) for just five mana.