When you usher in the blank period of the monster in the battle, when the field is blank, then the "Shield Dragon" will be your best choice, "Back Shield Dragon" also known as "Backstage Running Dragon", its attack power is 1600 points, the garrison power is 1800 points, the monster attribute is dark, it is a dragon effect monster with a level of 5 stars, although it is a low-attack monster at the higher level, but its effect cannot be underestimated, when this card exists in the graveyard, there is no card on the field to be launched. This card and hand card of the graveyard are guarded by 1 Dragon Monster with less than 4 stars to indicate a special summon. This effect special summons this card except on occasions when it leaves the field.

Seeing its effect involuntarily reminds me of the "Yellow Spring Frog", when this card exists in the graveyard during my own preparation stage, and there is no magic trap card on my own field, I can summon it on my own field. The two seem to be the same philosophy. But after the "Shield Dragon" also has an additional effect of pulling on the companion.
According to his effect, I feel that it is most suitable to pull on the "dragon" and "rare metal dragon", the former is that there is at least 1 other monster on the field that cannot be summoned. When there are no Dragon Clan monsters on the field other than this card, this card cannot attack declarations. The latter is in the ability to summon normally, only special summons. These two monsters have a good attack power in the 4 Dragon Clan.
Because the "Back Shield Dragon" is a 5-star monster, it is not cost-effective to summon it directly with the sacrifice. Maximizing its value is to directly pile the tomb, you can consider using magic cards to "offer to the dead", trap cards "thunder break", magic cards "vibrate out", magic cards "black core", etc., cards with the effect of discarding hand cards, and sending the "Back shield dragon" directly to the graveyard.
In addition, the "Backstop Dragon" with the "Reorganization Dragon" also has a good effect, the "Reorganization Dragon" has an attack power of 1000 points, a garrison power of 600 points, a monster attribute of dark, a monster race of dragons, and a 3-star effect monster. There are two effects.
1. This card can send 1 other monster to the graveyard and summon special from the hand card.
Second, this card can only be activated when the graveyard exists, except for the 3 monsters with the same name other than this card from their own graveyard. This card is specially summoned from the graveyard.
It is worth noting that the special summon of this card name as a method can only be used once per turn, and the effect of being used can only be used once per turn.
Use the Reset Dragon to send the Backstop Dragon into the graveyard, where they are then pulled back by the Double Triceratops, or as a starting point for counterattack tactics.
"Double Triceratops" requires 2 Dragon Monsters with less than 4 stars other than derivatives as connection summons, and when this card is successfully summoned, it pays 500 basic points to target 1 monster with more than 5 stars in its own graveyard. That monster is summoned on its own field as the area to which this card is connected. The effect of this effect special summoned monster is invalidated, and this turn cannot be attacked.
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