With decks restricted to just 20 cards and a very limited card pool, finding little synergies and building your own decks is more achievable and accessible than in any other card game on the market right now
Any counters, Auras, Equipment, etc., will fall off when Clive leaves and then returns, and this will be true for the other Dominants like Dion, Bahamut's DominantDion, Bahamut's Dominant and Jill, Shiva's DominantJill, Shiva's Dominant
Eidolon especially works poorly with the card quality and draw stuff as well as your super low curve
For instance, when the new Simba card boosts, the player reveals the top card of the deck
That is a remarkable accomplishment for a standard holo
Sixth Sense (Forbidden) Here we have Sixth Sense, which would be much higher on the list if it wasnt banned in competitive rulings but I still included it for those who want a more casual experience (in my defense you are looking at cards based on dice rolls)