Magic Resistance. The cyclops has advantage on saving throws against spells and other magical effects.
Multiattack. The cyclops makes two slam attacks.
Slam. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit:23 (3d10 + 7) bludgeoning damage.
Spell Vitalization. Immediately after a creature casts a spell of 1st level or higher within 120 feet of the cyclops, the cyclops can move up to twice its speed without provoking opportunity attacks. It can then make one slam attack against a target of its choice.
Cyclopes like those described in the Monster Manual are found primarily among the Gruul Clans. They are forces of nature, and even though they have occasionally been recruited into the Boros Legion, they can never truly be tamed.