First strike, haste
Whenever Fervent Champion attacks, another target attacking Knight you control gets +1/+0 until end of turn.
Equip abilities you activate that target Fervent Champion cost {3} less to activate.
Fervent Champion's last ability reduces only the generic mana in equip abilities. If those costs are only {3}, {2}, or {1}, that equip ability will be free to activate if it targets Fervent Champion.