Should you just attack with it to try and trade it off before it gets sacrificed
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Urianger Augurelt's last ability)
And if you keep removing the lore counters you get to keep your saga creature around for blocking or attacking
What's most important is building a deck that has a plan to win and the tools to do it
With that said, the Detective classification of cards in that deck really puts in the work as well
Disney Lorcana is the latest TCG to take the world by storm, appealing to not only Disney fans, but also trading card game enthusiasts, pro players, and - of course - collectors