Blue Dragon Wyrmling

Pounce. If the dragon moves at least 15 feet straight toward a creature and then hits it with a Claw attack on the same turn, that target must succeed on a DC 13 STR save or be knocked prone. If the target is prone, the dragon can make one Claw attack against it as a bonus action.

Multiattack. The dragon makes one Bite attack and one Claw attack.

Bite. _Melee Weapon Attack:_ +5 to hit, reach 5 ft., one target. _Hit:_ 8 (1d10+3) piercing damage plus 3 (1d6) lightning damage.

Claw. _Melee Weapon Attack:_ +5 to hit, reach 5 ft., one target. _Hit:_ 6 (1d6+3) slashing damage.

Lightning Breath (Recharge 5-6). The dragon exhales lightning in a 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 DEX save, taking 27 (5d10) lightning damage on a failed save, or half as much damage on a successful one.