MC buffs, now with names.

Example of MC buffs:
Weapons
Critical Strike -Chance to critically strike an enemy
Rage -Increases attack speed/decreases invulnerability time of enemies struck
Backstab -Deals extra damage when attacking an enemy from behind
Cripple -Cripples an enemy, decreasing their movespeed and action time
Battle Fury/Berserker -Increases movespeed when striking an enemy or killing an enemy
Death -Get dunked.
Armor Penetration -+20 Armor Penetration
Archers Suck -Can destroy enemy arrows mid-flight
Iron Price -Gains attack damage as life decreases
Command - Once per 3 minutes, can recruit an enemy to fight alongside you temporarily.

Armor
Survivor -Chance to block a fatal blow once per 2 minutes (does not restore you to full health)
Ranged Protection -33% less damage from ranged attacks
AoE Protection -33% less damage from explosions and other sources of AoE damage
Phoenix -When you die, burns all enemies in a 4-block radius. Cooldown is tied to Fatal Survivor.
Afterlife -When an ally near you dies, they temporarily respawn for 15 seconds, unable to take damage for the duration
Stasis -Once every 2 minutes, can go into stasis (invulnerable and drops creep aggro, but cannot take actions) for 2.5 seconds.
Zooooom (Alternatively, Explorer's Feet)-When out of combat, gives Speed II buff. Cooldown is roughly 30 seconds after engaging in combat (you don't deal or take damage to/from creeps)
Cold Steel -Once every 3 minutes, can be activated to slow every enemy within a 3-block radius.