I present a combat that I had against @Kalkulereren and where the importance of knowing how to select our cards (fighters) taking into account the capacity or limit of mana (which in this case was 18) to achieve a victory in an easy way is demonstrated.
The first thing to select correctly is our summoner and in this case I selected MARLIC INFIERNO and then select the cards related to this summoner, which were CERBERUS in front of all, followed by KOBOLD MINEER, TENYII STRIKER and finally FIRE DEMON.
Here TENYII STRIKER defeated MYCELIC MORPHOID.
Then KOBOLD MINEER defeated CHILD OF THE FOREST.
TENYII STRIKER in his attack defeated KHMER PRINCESS.
And finally MYCELIC INFANTRY is defeated by CERBERUS and my team suffers no casualties to regret.
Thus obtaining an excellent victory.