"Celtic Guardian", "Winged Dragon, Guardian of the Fortress #1", "Winged Dragon, Guardian of the Fortress #2", "Guardian of the Labyrinth" and "The Reliable Guardian" are not "Guardian" cards as they do not include 「ガーディアン」 in their Japanese names. As such, the only "Guardian" support card in the TCG/OCG, "Arsenal Summoner", specifically excludes them.
Guardian Sphinx appears as a character in "World Championship 2006", World Championship 2008, and in World Championship 2009, Guardian Angel Joan appears in World Championship 2008, Guardian Eatos appears in World Championship 2011, and Goyo Guardian appears in Yu-Gi-Oh! Duel Arena.
|Ceal||Shooting Star Bow|
|Kay'est||Rod of Silence|
|Tryce||Twin Swords of Flashing Light|
Most of the core "Guardian" monsters have a Summoning condition that prevents them from being Summoned unless their corresponding Equip Spell is already face-up on the field (although they can be Normal Set regardless). "Guardian Eatos" and "Guardian Dreadscythe" do not require their corresponding Equip Spells to be on the field in order to be Summoned, although "Dreadscythe" is a Special Summon Monster. Due to "Butterfly Dagger - Elma" being Forbidden, "Guardian Elma" can only be Set in the OCG and TCG Advanced Format.
The Deck primarily relies on a beatdown strategy. "Guardian Grarl", "Eatos" and "Dreadscythe" can Special Summon themselves from the hand making them useful as beatsticks. "Guardian Ceal" can be used to destroy cards on the field.
The Equip Spells "Twin Swords of Flashing Light - Tryce" and "Shooting Star Bow - Ceal" allow the equipped monster to attack twice or directly, respectively, at the cost of ATK. As such, it's best to use these on monsters with high original ATK and/or in conjunction with other Equip Spells. "Wicked-Breaking Flamberge - Baou" is also useful for preventing your opponent from using their destroyed monster effects. "Celestial Sword - Eatos" and "Reaper Scythe - Dreadscythe" can both offer large ATK increases, when sent from the field to the GY and while equipped respectively. Unfortunately, "Celestial Sword" misses the timing when sent to the GY to use the effect of cards such as "Eatos" and "Ceal" as they both send the Equip Card as a cost.
"Arsenal Summoner" allows searching the Deck's monsters, while the Equip Spells can be added to the hand with generic cards such as "Hidden Armory", "Armory Call", or "Fairy Tail - Rella". Also, because a "Guardian" Deck typically uses a large number of Equip Spells, several outside support such as "Phoenix Gearfried", "Immortal Phoenix Gearfried", and "Isolde, Two Tales of the Noble Knights" fit well into the Deck. The "Gearfried" monsters make for good additional boss monsters with negation effects, while "Isolde" can help search them. If using "Isolde", "Knight Dai Grepher" is a good Warrior-Type monster to include as it can recycle Equip Spells from the GY.
In most cases, there is no benefit for pairing the "Guardian" monster with associated Equip Spell, but using cards such as "Collected Power" or "Tailor of the Fickle" can be used to facilitate this, or save the Equip Spells from destruction by changing who they are equipped to at Spell Speed 2.
- The worst weakness of the deck is probably the interaction with its own archetype. Without massive amounts of generic or outside support, all "Guardian" monsters and Spells constantly end up missing either the right monster or the right Equip Spell, which can lead to unbearable bricks.
- The archetype, just like most other archetypes, does not like any form of Summon Negation; therefore, cards like "Vanity's Fiend", "Vanity's Emptiness", "Archlord Kristya" or "Fossil Dyna Pachycephalo" can stop the deck completely.
- Since the archetype is almost completely relying on the combination of Equip Spells and Monster Cards, any form of effect that will either prohibit players from using Spell Cards or delay them will hurt this deck immensely. Examples are "Horus the Black Flame Dragon LV8", "Imperial Order" or "Anti-Spell Fragrance".