It's Rose Dragon! Yeah as cool as Rose Dragons are in the Anime they are quite difficult to pilot, so let me explain more in Detail.
If you decide to play Rose Dragon it's like playing 2 Decks at once, so be prepared and practice:
The Rose Dragons
The Dream Combo is opening Red and White Rose Dragon. Summon Black Rose Dragon ---> Search Frozen Rose ---> Mill Revival Rose ----> Special Roxrose Dragon ---> Search whatever fits the Situation ---> Summon Ruddy Rose Dragon.
But beware that that's not that strong going first. Going first a Crossrose Dragon +Black Garden or a plant on your field is way better to interrupt plays with a sudden Black Rose Dragon summon during his turn. Again beware to not do it mid chain since BRD (Black Rose Dragon) will miss his timing then.
Roxrose Dragon, Blue Rose Dragon & Blooming of the Darkest Rose all help to prevent the loss of a Black Rose Dragon when he destroys all Cards. White Rose Dragon, Garden Rose Maiden and Black Garden are able to revive lost Rose Dragons.
Combining Black Rose Moonlight Dragon with Black Garden allows a Monster Bounce which can't be negated since you can Chainblock the effect with Black Garden itself.
As for Ruddy Rose Dragon, beware using his banishing effect early since you too will loose a lot of Graveyard effects and possible plants for banishing for other effects. Think of it as a big blowout midgame to finish the game easily then.
There's a lot more to think about here but that are things you will experience for yourself if you play with this Deck more often.
The Plants
The 2nd essencial focus in this Deck are the plants. Ruddy Rose Witch enables a search for the Witch of the Black Rose and puts a Rose Fairy on top of the Deck which results in another easy way to access Black Rose Dragon and especially Roxrose Dragon but only with no other cards on your side of the field.
Lonefire Blossom helps to fill the Graveyard with plants for Mark of the Rose, a powerful Snatch Steal like Spell and she can easily summon Tytannial or Gigaplant.
Tytannial has to be the best going first move possible since she +Black Garden equals almost infinite targeting negates for anywhere on the field. It's very easy to destroy whole Combo setups with her and win the game from there, a real powerhouse to play.
The Rose Tentacles are another powerplayer with Black Garden together. If you equip her with Thorn of Malice it's very easy to OTK the opponent with very little setup.
Lastly Queen of Thorns makes up for a nice floodgate which is another good going first setup. There's a lot more to think about and many Combos which I can't go into detail here.
Final thoughts
This Deck can easily destroy all cards on the field every turn and prevent Combo decks from playing the game with Tytannial. Black Garden cripples many Decks and creates many special gamestates from which you can easily overrun your opponent.
But sometimes the synergy between the own cards doesn't work out the way you want and bigger towers can be difficult to clear. It's a difficult deck to play optimal.
If you like Rose Dragons be sure to give this Deck a try. I find it easy to go into Platin League in Master Duel with it. Beyond that it's getting difficult to progress against certain matchups.
Overall Rating: ★★★☆☆☆