Mother Grizzly: When destroyed as a result of battle, Special Summon one Aqua type monster with 1500 or less attack points from your deck in face up attack position. Maiden of the Aqua: As long as this face remains face up on the field, it's treated like "Umi" (without the attack/defense boosters). Amphibious Bugroth MK-3: As long as "Umi" is face up on the field, this card can attack your opponents life points directly.
Mother Grizzly: When destroyed as a result of battle, Special Summon one Aqua type monster with 1500 or less attack points from your deck in face up attack position.
Maiden of the Aqua: As long as this face remains face up on the field, it's treated like "Umi" (without the attack/defense boosters).
Amphibious Bugroth MK-3: As long as "Umi" is face up on the field, this card can attack your opponents life points directly.
Did you have to kill Mother Grizzly or summon Maiden of the Aqua to activate the "attack directly" effect?