Summoning Portal

Summary
Size 2x2

The Summoning Portal is where you summon troops to attack your foes. Upgrade it to summon more powerful troops. Summon troops using Iron or Brightsteel. These troops will be stationed in the Mess Halls.
 * Summoning Portals are unable to function while being upgraded.
 * Once players have queued troops in the Portal, they can instantly complete the summoning with Amber; the amount required is directly proportional to the amount of time remaining to finish normal summoning.
 * There is also an option to accelerate summoning for 30 minutes. The Speed Up option costs 10 Amber and will increase the summoning speed of the boosted Portal by a factor of 5.
 * If players upgrade the Portal while troops are still queued up to be summoned, the troops inside will be stuck until the upgrade finishes.