12 cards where the text includes “exert” and the rarity is equal to uncommon

Ahn-Crop Champion (Amonkhet #194)
Ahn-Crop Crasher (Amonkhet #117)
Battlefield Scavenger (Amonkhet #118)
Clockwork Droid (Doctor Who #172)
Devoted Crop-Mate (Amonkhet #10)
Fervent Paincaster (Hour of Devastation #91)
Hope Tender (Hour of Devastation #119)
Resolute Survivors (Hour of Devastation #142)
Steward of Solidarity (Hour of Devastation #25)
Trueheart Twins (Amonkhet #153)
Vizier of the True (Hour of Devastation #28)
Watchful Naga (Amonkhet #193)

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