Elusa, Rune Masked

: Creatures enchanted with a mask you control have "When another creature enters the batlefield all creatures you control gain +0/+1 UET"
+1: creature a Mask enchantment control with:"enchanted creture have totem armor and first-strike" attach it to the creature with the lowest power"
-3: Exile target creature with a Rune counter in it, when Elusa, Rune Masked leave the battlefield put them back unde the control of its owners