The List

Angelic Favor

If you control a Plains, you may tap an untapped creature you control rather than pay this spell's mana cost.
Cast this spell only during combat.
Create a 4/4 white Angel creature token with flying. Exile it at the beginning of the next end step.

Nemesis

If you control a plains, you may tap an untapped creature you control instead of paying Angelic Favor's mana cost.
Play Angelic Favor only during combat.
Put a 4/4 white Angel creature token with flying into play. Remove it from the game at end of turn.