Due to his base armor and armor increase per level, Rammus effectively receives a bonus to his base attack damage (~5) and additional attack damage per level (~1) up to ~21 bonus attack damage at level 18.
Any buff or debuff that affects Rammus' armor will increase or reduce the bonus damage respectively as well. (e.g. Bulwark or Spirit Fire)
Similarly to Galio'sRunic Skin, Spiked Shell will cause a decrease in attack damage if Rammus' armor is reduced below 0.
COST: 70 / 80 / 90 / 100 / 110 mana
COOLDOWN: 16 / 14.5 / 13 / 11.5 / 10
Active: Rammus tucks into a ball and begins to roll for up to 7 seconds, constantly accelerating from an initial bonus 0% movement speed up to a bonus 140% movement speed. Upon colliding with an enemy, Rammus knockbacks all nearby enemies, dealing magic damage, and slows them for 3 seconds afterwards. Rammus reverts to his normal state as well.