Pegasus Stampede
{1}{W}
Sorcery
Buyback--Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast ~this~. If you do, put ~this~ into your hand as it resolves.)
Create a 1/1 white Pegasus creature token with flying.
Sacred Mesa
{2}{W}
Enchantment
At the beginning of your upkeep, sacrifice ~this~ unless you sacrifice a Pegasus.
{1}{W}: Create a 1/1 white Pegasus creature token with flying.