16 cards where the card types include “saproling” and the cards aren't double-sided

Phyrexian Saproling (March of the Machine Tokens #8)
Phyrexian Saproling (MOM Japanese Promo Tokens #10)
Saproling (Ravnica Remastered Tokens #12)
Saproling (Dominaria United Tokens #18)
Saproling (Battle for Baldur's Gate Tokens #14)
Saproling (Dominaria Tokens #11)
Saproling (Dominaria Tokens #12)
Saproling (Dominaria Tokens #13)
Saproling (Return to Ravnica Tokens #10)
Saproling (Magic 2013 Tokens #9)
Saproling (Secret Lair Drop #1139)
Saproling (Explorers of Ixalan #T1)
Saproling (Duel Decks: Phyrexia vs. the Coalition Tokens #3)
Saproling (Shards of Alara Tokens #9)
Saproling (Tenth Edition Tokens #5)
Saproling (Magic Player Rewards 2001 #2)

The message was clear to Sorin—time to search for something else.