I already wrote about this guy yesterday:

I guess I missed something special.

I think the real power of this card might very well be in conjunction with Manifest. Since you can return manifested cards to your hand [scryfall]Whisperwood Elemental[/scryfall] + [scryfall]Temur Sabertooth[/scryfall] = cheap card draw.

[deck]
[creatures]
4 Temur Sabertooth
4 Whisperwood Elemental
4 Icefeather Aven
4 Quickling
4 Courser of Kruphix
2 Sagu Mauler
4 Sylvan Caryatid
4 Polukranos
[/creatures]
[spells]
4 Wildcall
2 Jace, the Living Guildpact
[/spells]
[lands]
4 Temple of Mystery
4 Yawimaya Coast
4 Thornwood Falls
3 Island
9 Forest
[/lands]
[/deck]

We can abuse the information given by [scryfall]Courser of Kruphix[/scryfall]. It can tell us when to use [scryfall]Wildcall[/scryfall], as can [scryfall]Jace, the Living Guildpact[/scryfall]. Jace can also be used to see what to give to [scryfall]Whisperwood Elemental[/scryfall] to Manifest. This can lead to pretty bad blowouts with you getting a cheap [scryfall]Sagu Mauler[/scryfall] or [scryfall]Icefeather Aven[/scryfall] into play.