Leaders gain abilities when the cards are raised in rank. Not all cards will gain abilities at the same ranks - some gain easier than others.

Example: Dancing Elf & Vermillion Sparrow gain increased strength for same at 1LT
Chimera the Flying Mystical Beast gains a movement boost at CPT while Garvas gains the same ability at MAJ and Aqua Dragon has this ability at LTC. (Get Steel Scorpion to this level - he can open ur oponents cards!)
My Flame Swordsman is a RADM and he still has no abilites that i can see and he can't find hidden cards.

how do you get millniumritual.