Cards like "Kunai with Chain" work well if this card is already on the field and your opponent attacks with a 2500-3000 ATK monster. Not only will you win the fight, but are guaranteed to have the monster with the higher ATK most of the time.
If "Hardened Armed Dragon" is used for the Tribute Summon of this card, its effect will not only protect Queen Angel of Roses from destruction by your opponent's effects, but also by its own.
You can change its Type to Plant with "DNA Surgery" so that it would be the only monster to be Tributed, while still applying its effect on Queen Angel of Roses.
This card is a viable target for "Tribute Doll", allowing you to use it freely in a non-Plant deck.
Make sure that this card is not the only one out on the field. It will be forced to destroy itself. To remedy this, you can use cards such as "Nightmare Archfiends" and "Ojama Trio" to inflict damage as they are destroyed.
You can use "Lonefire Blossom" to Special Summon this card from your deck, giving you a free 2400 attacker and a means to destroy monsters.
You can Tribute Summon this card using "Dandylion" and Special Summon the "Fluff Tokens", in case your Queen Angel of Roses would be the only monster in your next Standby Phase.
If this card is alone on the field, you can use "Book of Moon" to prevent it from self-destructing.
By using "Light of Intervention", all monsters your opponent would set would be face-up and could possibly be destroyed by this card's effect.
When used with "Phoenixian Cluster Amaryllis" and a sufficient supply of Plant-type monsters in your Graveyard, you will have a constant target for this card's effect that can bring itself back turn after turn, ensuring its effect never destroys itself, and deal 800 damage to your opponent each time.