Caverns of Time Event

Caverns of Time is an event first slotted to 19th to 25th June 2018.

Instructions
Here are the instructions given in-game:

EXPLORE RULES Note : Those instructions are from the second iteration of the event (august 2018). During the first one, you weren't able to earn tokens by attacking monsters or dueling/invading.
 * 1) Explore the Caverns of Time to defeat monsters and win wonderful prizes!
 * 2) The “Explore” action costs 10 tokens, and you’ll have a chance to encounter rare monsters and challenge them for a higher prize.
 * 3) The “Attack” action costs 2 token. Attacks cause a fixed amount of damage, but have a chance to do critical hits.
 * 4) After killing a monster, you can collect different prizes such as Gold, Tokens, or Enhance Crystals.
 * 5) Every time you use the “Explore” action, 3 tokens will be charged to the Token Jackpot. Killing rare monsters will give you a chance to win up to 30% of the tokens from the Token Jackpot.
 * 6) You will regain 1 token/hour if your token count is under 20. You can also purchase 20 tokens for 10FP.
 * 7) Attack Monsters and Invade or Duel against other players in Battle to gain Time token(Max 50/Day).
 * 8) You can exchange tokens for valuable items.

Other Notes :
 * 1 attack deals 20% of the monster's HP. Without critical hits, you need 5 attacks (10 tokens) to kill a monster. During the first iteration of the event, each attack dealt 10%, so you needed 10 attacks (but also 10 tokens).


 * Critical hits deal twice the damage (?), i.e. 40% of the monster's HP.
 * If you don't have enough tokens to finish killing a monster, you can close the game and come back later. When clicking on the "Explore" button, it won't consume any more tokens, and will take you back to your monster with its remaining HP.

Common monsters

 * Ratman Explore Ratman.jpg


 * Whelp Explore Whelp.jpg


 * Slime Explore Slime.jpg


 * Goblin Explore Goblin.jpg


 * Bat Explore Bat.jpg

After defeating those common monsters, you can earn small rewards including Enhance Crystals, additional tokens (up to 20?), ..., ..., ...

Fire Lord
You can encounter the Fire Lord after an explore.

When defeating the Fire Lord (which requires the same amount of clicking as the common monsters), you will earn better rewards, including ..., additional tokens (up to 100?), ..., ...

You also have a small chance to earn the Jackpot instead, which is up to 15 000 (?) tokens, depending on the current value of the "Token Jackpot", which can reach a maximum value of 50 000 (?).

Purchasable Rewards
Upon reaching a certain amount of tokens, you can buy items:
 * Enhance Crystal x1 - 30 tokens
 * Enhance Crystal x5 - 100 tokens
 * Purchasable up to 99 times.
 * Enhance Crystal x40 - 500 tokens
 * Purchasable up to 10 times.
 * 200 FP - 500 tokens
 * Purchasable once.
 * The Time Keeper - 2000 tokens
 * Purchasable up to 20 times.
 * 2000 FP - 5000 tokens
 * Purchasable once.