Imodane's Recruiter
{2}{R}Creature — Human Knight
When this creature enters, creatures you control get +1/+0 and gain haste until end of turn.

Creature — Human Knight // Sorcery — Adventure
Creature — Human Knight
When this creature enters, creatures you control get +1/+0 and gain haste until end of turn.
Sorcery — Adventure
Create two 2/2 white Knight creature tokens with vigilance. (Then exile this card. You may cast the creature later from exile.)
This card's ability triggers when it enters the battlefield, not when it's cast. Effects that double ETB triggers (like Panharmonicon) work here. Countering the spell prevents the creature from entering, so the ETB won't fire.