Mechanics of Journey into Nyx

Journey into Nyx is on the way and all mechanics have been already revealed. Apart from old goodies, such as Scry a two totally new abilities will be introduced:

Constellation - this ability triggers every time a card with it or another enchantment enters the battlefield under your control giving you some bonus.

Strive - As you cast a spell with strive, you can choose any number of targets, paying an additional cost for each target beyond the first. You may target any number of creatures, however you can't target a single creature with it more than once.