Thanks! Played 2 fury in the beginning. Almost always get them on 2 creatures, much less often on 3+ the opponent has to be very bad at not clearing the table before turn 4 (or 3 with my coin) 2 creatures is 4 damage for 1 turn. Serum is 5 damage for 1 turn and only 1 creature is required. 5 mana is no problem since the growth curve only slows down at 6 mana. After fury you often have 3hp creatures, they are still easy to kill.

Wall even though it only gives 1 damage unlike fury, it is strong in warrior mirror, it stops other aggro, it allows you to heal in deathmatchups.

Maybe these are all little things and objectively may not be correct, but I feel more comfortable playing these particular cards. Although wall is of course still an issue 🙂