When griffins started nesting atop the northern tower, the castellan worried they'd be a nuisance. Instead, they took the entire castle under their protection.

Griffin Aerie

At the beginning of your end step, if you gained 3 or more life this turn, create a 2/2 white Griffin creature token with flying.

"Davin's heart swelled with a heady mix of excitement and fear. If the young griffin accepted him, he would begin his path to knighthood."
—*Skies of Ardenvale*