Sand Stream ability

Summons a sandstorm that lasts indefinitely upon entering battle.

Effect: The weather changes to a sandstorm when this Pokémon enters battle and does not end unless cancelled by another weather condition. If multiple Pokémon with this ability, drizzle, drought, or snow-warning are sent out at the same time, the abilities will activate in order of Speed, respecting trick-room. Each ability's weather will cancel the previous weather, and only the weather summoned by the slowest of the Pokémon will stay. Overworld: If the lead Pokémon has this ability, the wild encounter rate is halved in a sandstorm.

All Sand Stream ability Pokémon

Pokemon National#		Type	Abilities	Stats
				HP	Att	Def	S.Att	S.Def	Spd
	Tyranitar #248	Rock Dark	Sand Stream *Unnerve	100	134	110	95	100	61
	Hippopotas #449	Ground	Sand Stream *Sand Force	68	72	78	38	42	32
	Hippowdon #450	Ground	Sand Stream *Sand Force	108	112	118	68	72	47
	Gigalith #526	Rock	Sturdy Sand Stream *Sand Force	85	135	130	60	80	25
	Mega Tyranitar (Tyranitar) #248	Rock Dark	Sand Stream	100	164	150	95	120	71

(*) = hidden ability