You can't just poison them
Often people focus so hard on beating the best deck that they lose to matchups that were much easier before the alterations
Akroma, Angel of Fury Angelic Captain Anya, Merciless Angel Aurelia, Exemplar of Justice Aurelia, the Law Above Aurelia, the Warleader Aurelia, the Warleader Avacyn, the Purifier Basandra, Battle Seraph Feather, Radiant Arbiter Feather, the Redeemed Firemane Angel Firemane Avenger Flameblade Angel Gisela, Blade of Goldnight Goldnight Castigator Kasla, the Broken Halo Lightning Angel Maelstrom Archangel Razia, Boros Archangel Rienne, Angel of Rebirth Shalai and Hallar Tariel, Reckoner of Souls Tiana, Ship's Caretaker
Your opponent will have to be in a very good position in terms of creatures and available mana to be able to attack you without losing at least some amount of life
Target creature gets -2/-2 until end of turn