Rhiannon, Aetherblade

+1: Look at the top three cards of your library. You may reveal an artifact or enchantment card from among them and put it into your hand.
-2: Target creature you control gains hexproof and lifelink until your next turn. If it's an enchantment creature, it also gains indestructible.
-7: You get an emblem with "Whenever you cast an enchantment spell, create a 2/2 blue and red Elemental creature token with prowess."