Plus (Tier 2) gives you the following:
Every month:
* 8 Blacksmith Coins
* 240 Crystals
* 1 Pet Egg
* 1 Speckled Egg
Passive perks:
* 12% off everything in the store
* +40% AFK Crystals
* More crystals from voting: +2 Crystals per vote
* 1.8x Mines Crystals & Money cashout
* 1.4x Opal Pieces from the mines