While generating low cost compared to others and providing mid-tier damage and a weak slow, Cyrene redeems herself with a 20% crit rate buffs for two allies. At A1, this affects all allies within two tiles, making her a useful mid-game buffer, as well as a quick and cheap source of cost. Cyrene sees alot of use in Arena due to her own low cost and her ultimate's cost regen allowing for some very powerful teams, especially when paired with Venoma.