Guardian Giant

Huge Giant, Lawful Neutral

AC: 19

Initiative: +3 (13)

HP: 137 (11d12 + 66)

Speed: 40 ft.

STR: 24 (+7)
DEX: 17 (+3)
CON: 22 (+6)
INT: 10 (+0)
WIS: 18 (+4)
CHA: 12 (+1)

Saving Throws: Dex +6, Wis +7

Skills: Insight +7, Perception +10

Senses: Passive Perception 20

Languages: Common, Giant

CR: 8 (XP 3,900; PB +3)

Vigilant.

The giant can't be surprised.

Actions

Multiattack.

The giant makes three spear attacks.

Spear.

Melee or Ranged Weapon Attack: +10 to hit, reach 10 ft. or range 60/240 ft., one target. Hit: 17 (3d6 + 7) piercing damage, or 20 (3d8 + 7) piercing damage if used with two hands to make a melee attack.

Reactions

Protection.

When an attacker the giant can see makes an attack roll against a creature within 10 feet of the giant, the giant can impose disadvantage on the attack roll.

Find this creature in the encounter builder

Source: Guildmasters' Guide to Ravnica, p. 201 - Licenses and attribution