DotA Items Glyph of Fortification

Glyph of Fortification Cost: 0 Gold Basic Items: Ancient of Wonders/Graveyard Description: Gives a massive armour bonus to all your structures for 4 seconds. Replenish Time: 6 minutes This makes all your structures indestructible for the 4 seconds duration. Use this item to prolong your tower's life at critical moments in the game.