Altergeists

The Main Deck monsters have slight disruptive capabilities, negating an opposing card's effects, stopping an attack, returning an opposing card to the hand or sending them to the Graveyard. Also, they have swarming capabilities that can be used to set up the Link Summon of their ace monsters, namely "Altergeist Primebanshee" and "Hextia", whose effects further reaffirms their swarming and disruptive abilities. Some of them also have an effect that triggers when they are used as Link Materials, searching for resources or retrieving cards from the Graveyard. So far, they are supported by Trap Cards that either revive them, protect them from attacks or even negate and destroy opposing cards.

The key to many of their successful plays is the power of Altergeist Multifaker who can Special Summon itself from the hand and any Altergeist from the Deck when a Trap Card is activated. As a result, they tend to be a slower strategy than most modern Decks, relying heavily on floodgates to slow down an opponent's strategy to a crawl. Altergeists aim to reduce games down to slow wars of attrition that they can win through field control and their many floating effects. A typical first turn would involve using Altergeist Marionetter to Set an Altergeist Trap from Deck (mostly Altergeist Protocol), then using Personal Spoofing to search Multifaker, which then Summons itself and Altergeist Silquitous to bounce any opposing cards that come into play. By recycling Multifaker over and over (as Personal Spoofing can "search" the same card it returns to the Deck), you can have access to any of the more specialised Altergeists whenever you need them, ranging from Meluseek to remove troublesome cards to Kunquery to control the Battle Phase.

If an opponent is unable to remove the field presence of the monsters, then Altergiest Hexstia can come into play, taking full advantage of their floating effects to negate most Spell/Trap cards, while also acting as the Deck's main offensive presence. By repeatedly shutting down their opponent's options and bouncing opponent's defensive cards, Altergeists can reduce their opponents to complete helplessness, only able to watch as their cards get picked off one by one.