When a "Red-Eyes" monster declares an attack: You can target 1 Warrior monster in your GY; equip it to this card as an Equip Spell with this effect. ● The equipped monster gains 200 ATK. When a card or effect is activated that targets a card you control (Quick Effect): You can send 1 Equip Card you control to the GY; negate the activation, and if you do, destroy that card. If this card is destroyed by battle or card effect: You can Special Summon as many monsters from your GY as possible, that were equipped to this card.
This warrior-type monster is the best option because you can have the option to also Fusion your Red Eyes Black Dragon with this monster to form Sky Galloping Gaia the Dragon Champion. This not only give you the flexibility in which Fusion monster to use during that particular situation, but it also grants you possible additional fusion summons during the same turn. Elemental HERO Blazeman is also a very good option because you can use it effect to draw Polymerization from your Deck to your hand, and it is also a Fusion material for Red-Eyes Slash Dragon.
This card can be Special Summoned via monster effects, from the list of monsters. Summoner of Illusions’ flip effect allows you to tribute 1 other monster on your field, to Special Summon 1 monster from your Extra Deck, but it is destroyed at your End Phase. Cyber Stein’s effect allows you to pay 5000 Life Points to Special Summon 1 monster from your Extra Deck to the field permanently.. You can send Mystical Beast of Serket together with Temple of the Kings, in order to Special Summon 1 monster from your Extra Deck to the field permanently.
Since you are most likely to need to perform Fusion summon, you can use these cards to support your Fusion actions. Fusion Recycling Plant can recycle 1 fusion material monster to your hand, and also search for Polymerization from your deck. King of the Swamp can be treated as 1 fusion material required for Fusion Summon, and at the same time it also can be used to search 1 Polymerization from your Deck. Fusion Sage can search 1 Polymerization from your deck.
These are the Support cards you can use for your Red Eyes Black Dragon. Red Eyes Insight sends 1 Red Eyes monster from your deck or hand to the Graveyard, and you draw 1 Red Eyes Spirit. Red Eyes Spirit is able to Special Summon 1 Red Eyes monster from your Graveyard to your Field. Ancient Rules allows you Special Summon Red Eyes Black Dragon directly from your hand.
This monster’s equip effect can be used multiple times in the same Battle Phase, whenever there is a Red Eyes monster performing an attack. You can use Red Eyes Wyvern to attack as well, as it is easily summoned to the field.
This card is able to negate cards like Enemy Controller during Battle Phase, by sending an Equip card to the Graveyard.
I know how it works but since RESDs special ability allows it to discard an equpped monster to negate the effect of a card targeting my monster, the same rule should go for Order to charge in that case.
You can negate an Order to Charge that targets a monster you control. The problem with that is that only the monster that's to be Tributed is targeted. (You select the monster to destroy when Order to Charge resolves.) So you're only ever going to be able to negate your OWN Order to Charge with Slash Dragon.