Your opponents can get put in a tricky situation if they have to split reanimation spells and reanimation targets, and you often benefit either way
The top three alone are 22% of the estimated master-set cost plan these purchases first and the rest of the set follows on a normal budget
Sure mobilize works great, but so do almost all other red and white mechanics, battle cry, battalion, exalted, mentor, provoke and training
Put X +1/+1 counters on it, where X is two plus the total number of cards you own in exile and in your graveyard that are Oozes or are named Slime Against Humanity.A deck can have any number of cards named Slime Against Humanity
The last brand to mention is Dragon Shield, which are a tiny bit thinner than other sleeves so they may save you some space and their perfect fit sleeves are sealable which is pretty cool
Counter Energy serves as a Double Rainbow Energy when behind (and not attached to a GX or EX)