Ilka, Callous Conductor

{3}{u}{b}, {t}, Put a verse counter on Ilka: Gain control of target creature with converted mana cost X or less, where X is the number of verse counters on Ilka.
At the beginning of combat, choose up to X target creatures, where X is the number of verse counters on Ilka. Those creatures gain haste and menace until end of turn.
If only they knew it was for the greater good.