Yelena, Blind Acolyte

Lifelink, haste
Aura spells you cast that target a permanent you
don't control or an opponent cost {1} less to cast.
Whenever you cast an aura spell, you may pay 2
life. When you do, choose one —
• Create a 2/2 black Vampire creature token.
• Target opponent loses 2 life and you create a
Blood token.