Sara, the Hexwarden

{b}{r}: Create a black Aura Curse enchantment token named Hex attached to the target player. This token has "Discard a card: Sacrifice this enchantment" and "At the beginning of your upkeep, you lose 1 life".
{w}{u}: Create a white enchantment token named Ward. This token has "{2}, Sacrifice this enchantment: Creatures can't attack you unless their controller pays {2} for each creature attacking you this turn"