Elementboosts increase the amount of per minute to a particular element on the same island as the boost, while decreasing the amount of per minute of the opposite element on the same island. The increased rate is 20% to the respective element and a decrease rate of 20% to the opposite element. Hybrid Dragons may receive a 44% boost if they reside on an island with two Element boosts beneficial to their two elements.
You are allowed one Boost per element. Multiple Boosts can be purchased by "stowing" them in the Storage Tower, but only one of each element can be placed outside the Storage Tower at any time.
Note: The calculation for two boosts is NOT really 40%. For the first boost take the BASE x 20% (or use BASE x 1.2) = SINGLE BOOST RATE. For the second boost take the BASE x 20% x 20% (or use BASE x 1.2 x 1.2 which is also BASE x 1.44) = DOUBLE BOOST RATE. The same rule applies for each subsequent boost.
All Boosts have a size of 2×2, have a cost of 250,000 , have a selling price of 125,000 , have a build time of 6 hours, and yield an experience of 250,000 .