Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.

Multiattack. The lizardfolk makes three melee attacks, 2 Slams and 1 Bite

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage. after being hit by this attack the target must make a DC 14 constertution saving throw, on a faild save they roll on the defect table and have that disadvantage untill the end of their text turn

Slam. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) bludgeoning damage.

DEFECT TABLE

1. disadvantage on saving throws 
2. disavantage on rolls to hit
3. take 2d4 necrotic damage
4. other creatures have advantage on hitting them
5. valnribility to bludgening damage
6. paralized
7. half movment
8. poisoned condition