When you look at the cards' details you'll see the skills for each. Each card usually has around 4 skills. For example, you can look at Phobos (a starting card).

Phobos Skills
Card Skill Name Required Required Required Required Bonus
Phobos Deimophobia Deimos


Phobos Destruction Ares Enyo Deimos Eris +50%ATK
Phobos Mother of Fear Aphrodite +20%DEF
Phobos Hot Wheels



Mother Daughter Reunion