When you attack, both players decide what side of the battlefield their creatures go to, and any creatures on one side of the battlefield cannot block or be blocked by creatures on the other (represented by the fact that they're on opposite sides of the river)
Simply put, this set is the perfectly balanced version of the Single Strike and Rapid Strike battle styles, combining fast-paced, strategic team combos and raw offensive power
Generally, its trivially easy to make sure this wont backfire, and even if it does, theyre now spending 2 mana on your turn for a spell that they just watched you cast for 1 mana
Here is an example of some popular Cube archetypes for each color pair
Sprigatito ex and Armarouge ex Deck Celebi - Grass - HP80 Basic Pokemon [C] Collect: Draw a card
Getting married to the love of my life was certainly the best feeling, but this is close