172 cards found matching has might, might is at least 5

Katarina, Reckless
Kayn, Unleashed
Keeper of Law
Kharox
Kha'Zix, Evolving Hunter
Kraken Hunter
Lee Sin, Ascetic
Lee Sin, Centered
Leona, Zealot
Lord Broadmane
Lux, Illuminated
Maduli the Gatekeeper
Mageseeker Warden
Magma Wurm
Master Bingwen
Master Yi, Unstoppable
Mega-Mech
Megatusk
Minah Swiftfoot
Mindsplitter
Minotaur Reckoner
Miss Fortune, Captain
Monch
Morgana, Vindictive