Use "Rikka Petal" or "Rose Lover" as tributes to bring out "Snowdrop, the Rikka Fairy" and any other plant monster of your choice, and use "Snowdrop" to change the levels of the monsters you have out to summon "Teardrop, the Rikka Queen". If she has plant monsters for materials, all the better, as you can interrupt your opponent's plays easily. If that plan falls through, on the next turn, use what materials you can to summon "Cross Rose Dragon" to then bring out "Black Rose Dragon" to wipe the field clean, and summon it back to attack your defenseless opponent.