The deck building guide explains these cards, why theyre included, and how they work
You can only look at the cards in your hand If you dont like the cards you draw in your starting hand, you can mulligan one time to put some back and draw others Psst older quickstart rules/videos have choosing turn order and drawing the wrong way around look here Alter Your Starting Hand Mulligan After drawing the seven cards to their hand, each player gets one chance to alter them
You can put a counter on your opponents creatures with The Wandering Emperors +1 ability, which might be relevant if you need to kill something with Valorous Stance (such as Halana and Alena, Partners)
As a Final Fantasy fan whos never really touched FFXIV, the character names just come off as bizarre and off-putting for that deck especially
Annihilator is a creature-based mechanic from Rise of the Eldrazi, and appears on the titular extra-planar monsters
Commander 2015 actually has a few other cards like this, that extend known mechanics to include additional players or all players
