CommentStreams:51f6a3ce170e9d84392d952e958947c5

Per my calculations above even if you beat the map and all the tournaments you'll still need to open about 30+ silver (and 5-6 gold) coffers on top of the 33 you could earn in the event. That cost 4.4K gems and takes about 11 hours of playing the same level 5 times a minute (which would make you sick). If you skip boss 1 for farming keys and go to levels 21-23 where keys are more expensive but you gain 290 WT per fight the cost of 30 silver coffers is about 4K gems.

Beating the map is also likely to cost you 4-8K gems depending on how strong your deck is and how many powerups you have (hint: use 2xAttack + HP boost on Oglodi when it is dealt in the first hand.

All-in-all, if you play right and spend 1-2K gems, you could get a 4-star Lizard Priest. Regular players would get 3-star Lizard Priest. And the P2W players (by spending $200-$400) have a chance to get the 5-star Lizard Priest (which is more expensive than it's usually sold for as part of the pack sale).