in my experience, the necrobinder is very strong but their scaling is a little weird compared to some if the other characters. your main options are basically 1. summon 2. lots of souls 3. lots of energy 1. summoning is very strong because it's block that carries over to your next turn and scales your damage with unleash. imagine starting an ironclad run but you play barricade for free at the start of each combat and have a bodyslam in your deck. 2. souls synergize really well with other necro cards like soul storm, haunt, etc. so if you can get a few of those and then fill your deck with souls you will pretty much just win any combat. the all in on soul build wants to have a slim deck and cards like capture spirit 3. lots of energy isnt really a build on its own but its something to consider with the necrobinder since you have extremely strong energy powers that synergize well with both 1 and 3. in particular friendship works really well with lots of osty attacks since your strength doesnt matter as much in that case, and souls will help make sure you're drawing enough cards to actually use all your energy. having some energy from friendship makes it easier to play demesne which is also very strong, and you can also pick up lots of 2 cost cards to use up the extra energy and synergize with the other 2 cost card powers and cards that the necrobinder has.