Your challenge is simple make one of the following cards:
Oviya Pashiri's Expertise
They must follow the same rules as the other expertise cards. (Sram, Baral, Yahenni, Kari Zev & Rishkar.
You can make a cheep (4 mana or less) white rare legendary creature for the Kaladesh set and an expertise for that legendary.
Prizes are as follows:
1st. 5 likes
2nd. 3 likes
3rd. 1 like
Here is a link to the original expertise cycle: http://gatherer.wizards.com/Pages/Search/Default.aspx?action=advanced&name=+[expertise]&set=+["Aether Revolt"]
1 entry per person.