22 cards where the card is tagged “synergy-defender”

Arcades, the Strategist (Core Set 2019 #212)
Assault Formation (Jumpstart #378)
Axebane Guardian (Return to Ravnica #115)
Blight Pile (Dominaria United #82)
Coral Colony (Dominaria United #45)
Doorkeeper (Iconic Masters #53)
Flamewright (Conspiracy #46)
High Alert (Ravnica Allegiance #182)
Overgrown Battlement (New Capenna Commander #303)
Perimeter Captain (Worldwake #16)
Portcullis Vine (Core Set 2021 #195)
Rammas Echor, Ancient Shield (Tales of Middle-earth Commander #505)
Rolling Stones (Eighth Edition #38)
Shield-Wall Sentinel (Dominaria United #238)
Stalwart Shield-Bearers (Rise of the Eldrazi #46)
Teyo, Aegis Adept (Jumpstart: Historic Horizons #6)
Towering Titan (Jumpstart #31)
Vent Sentinel (Iconic Masters #153)
Wakestone Gargoyle (Conspiracy #88)
Walking Bulwark (Dominaria United #241)
Warmonger's Chariot (Jumpstart #490)
Wingmantle Chaplain (Dominaria United #39)

In the blink of an eye, they strode from deep snow to the end of this search.