Remove from play, from your side of the field or your Graveyard, Fusion Material Monsters that are listed on a Dragon-Type Fusion Monster Card, and Special Summon that Fusion Monster from your Extra Deck. (This Special Summon is treated as a Fusion Summon.)
|Other||Dragonic Fusion (Skill) [SR]|
Since Dragon's Mirror can be used on most Dragon-type fusion monsters, it can be viable in different dragon decks. Five-Headed Dragon is automatically added to the deck if you are using the skill, and it can be fusion summoned using any 5 Dragon monsters. This can give some flexibility if you are using any Dragon type deck.
Dragon Knight of Creation and Paladin of Felgrand can be good ways to get Dragon-type monsters from your deck to the graveyard. This will thin your deck and help with drawing Dragon's Mirror, as well as setting up for fusion summon later by using them from the graveyard. If you are using some normal Dragon-type monsters, you can use Hieratic Dragon of Nuit to also get them from your deck.
Since the fusion material cards are banished when they are used, you can special summon them using these cards.
Since you can use fusion substitute monsters, King of the Swamp works well with Dragon's Mirror as the sub for a required monster since its effect sends itself to the graveyard.
|Actions||Fuses Materials from your field / Fuses Materials from your Graveyard|
|Banished categories||Banishes from your field / Banishes from your Graveyard|
|Summoning categories||Fusion Summons / Special Summons from your Extra Deck|
|Early Dec 2019||Raid Duel - The Netherworld Cometh: Wireqocha Rasca|
|Duel Quest Event|
|Mid Dec 2019||Leo & Luna Duel Carnival Event|