Vryn Wingmare
Creature — Pegasus
Flying
Noncreature spells cost 
more to cast.
It's the favored mount of military commanders as well as anyone with a flair for the dramatic.
Seb McKinnon
Core Set 2021 (M21)
• #43Rulings
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases (such as that of Vryn Wingmare), then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
(wotc • 2020-06-23)
The ability affects each spell that's not a creature spell, including your own. Creature spells with another type, such as artifact creature spells, aren't affected.
(wotc • 2020-06-23)
Rulings
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases (such as that of Vryn Wingmare), then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
(wotc • 2020-06-23)
The ability affects each spell that's not a creature spell, including your own. Creature spells with another type, such as artifact creature spells, aren't affected.
(wotc • 2020-06-23)