Cannot be Normal Summoned/Set. Must be Special Summoned by its own effect.
You can only use each of the following effects of “Flowerdino” once per turn.
If you activate a Trap Card or effect, or your opponent activates a Spell Card or effect: You can Special Summon this card from your hand.
If this card is sent to the GY: You can target 3 banished Spells/Traps; place them on the bottom of the appropriate Deck(s) in any order, then draw 1 card.