Even before Teferi heard Wrenn's call, a few Zhalfirins were roused from sleep by a strange, otherworldly song.

Distant Melody

Choose a creature type. Draw a card for each permanent you control of that type.

The List

Secret Lair Drop

The Lost Caverns of Ixalan Commander

Wilds of Eldraine Commander

Note that this spell counts the number of permanents you control of the chosen type, not just the number of creatures you control. It will also take your kindred permanents of the chosen type into account.