Plus all cards including common and uncommon use premium foil
But, despite that distinction, its obscure enough and its design is bland enough compared to the others on this list.
I run Whisperer in decks like Nikya of the Old Ways and Ulrich of the Krallenhorde, both decks that heavily promote running creatures (Vivien, Champion of the Wilds) and discourage playing noncreatures (Ruric Thar, the Unbowed, Thorn of Amethyst)
The easy answer is a mix of math and opportunity cost
Expressing your appreciation, you can choose a design to represent your personality and personalize the card with meaningful photographs
The stat-line is terrible, but you'll learn to respect Sisay the moment you allow an opponent to untap with it