The best way to massacre an upcoming force of rhinos. Using the Lvl.4 Arch Druids Scarecrows and some Large Towers. The scarecrows reduce the enemy's attack, causing less damage to the towers, walls, or gates.
Optional: Have some T.Rex Titans and Allos for a bloody feast!
Note: Scarecrows can only be built with the Arch Druid in Level 4 with the Dustrider faction.