Heroic Signal

{x}: Tap X number of Civilian creatures you control and add those many Heroic Summons counters onto this card.
Sacrifice any number of Heroic Summons counter
and then search your library for a Hero creature with mana value equal to or less than the number of Heroic Summons counters you sacrificed and put them onto the battlefield.
—
"When Empire City needs us, we will always heed the
call." -Silver Lining