u/Venom_Pistol_RR

- Round 1 : buy any 2 cards. Don't think about placement since the game already does it for you when you buy one, so there is no need to make things more difficult for you.

- Round 2+ : buy shiny cards in shop.

- Shiny cards represent units that match your current traits. Traits are useful because they enhance your units. Very shiny cards represent merges, you're maybe already familiar with this one. A merge completely upgrades your unit but once again no need to overthink it to win your games.

Bonus : Watch a movie or a Youtube video while you're playing, because you might get bored of making 2 actions per round. So keep playing to easily reach top 10k and even top 1k.