Rikka Tranquility

When you activate this card, you can also Tribute 1 Plant monster; Special Summon 1 "Rikka" monster from your GY in Defense Position, then, if you Tributed a monster when you activated this card, Special Summon 1 Plant monster from your GY in Defense Position. You can only activate 1 "Rikka Tranquility" per turn.