Most cards in yellow have powerful trigger effects that can be activated when taking damage
It can tap for one colorless mana or for one mana of any color if you use that mana to cast a creature of the chosen type
You wont be able to activate abilities of planeswalkers you control more than twice in a turn
If youre just starting your Lorcana journey, I recommend reading my complete beginners guide, which covers how to play Lorcana, the rules, keywords, mechanics, and more
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Icebreaker Kraken)
Normally, you follow three main rules when building a deck: Your deck must have at least 60 cards