Zwanghafter Häuter

Wenn der Zwanghafte Häuter ins Spiel kommt, lege eine +1/+1-Marke auf eine Kreatur deiner Wahl.
Delirium — Zu Beginn des Versorgungssegments jedes Gegners und falls dein Friedhof vier oder mehr unterschiedliche Kartentypen enthält, lege eine +1/+1-Marke auf eine Kreatur deiner Wahl.

Peletero obsesivo

Cuando el Peletero obsesivo entre, pon un contador +1/+1 sobre la criatura objetivo.
Delirio — Al comienzo del mantenimiento de cada oponente, si entre las cartas de tu cementerio hay cuatro o más tipos de cartas, pon un contador +1/+1 sobre la criatura objetivo.

Tanneur obsessionnel

Quand le Tanneur obsessionnel arrive, mettez un marqueur +1/+1 sur une créature ciblée.
Délire — Au début de l'entretien de chaque adversaire, s'il y a au moins quatre types de carte parmi les cartes de votre cimetière, mettez un marqueur +1/+1 sur une créature ciblée.

Scuoiatore Ossessionato

Quando lo Scuoiatore Ossessionato entra, metti un segnalino +1/+1 su una creatura bersaglio.
Delirio — All'inizio del mantenimento di ogni avversario, se ci sono quattro o più tipi di carta tra le carte nel tuo cimitero, metti un segnalino +1/+1 su una creatura bersaglio.

偏執的な皮剥ぎ人

偏執的な皮剥ぎ人が戦場に出たとき、クリーチャー１体を対象とする。それの上に＋１/＋１カウンター１個を置く。
昂揚 ― 各対戦相手のアップキープの開始時に、あなたの墓地にあるカードの中に４種類以上のカード・タイプがある場合、クリーチャー１体を対象とする。それの上に＋１/＋１カウンター１個を置く。

Obsessive Skinner

When Obsessive Skinner enters, put a +1/+1 counter on target creature.
Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, put a +1/+1 counter on target creature.

Duskmourn: House of Horror Commander

Shadows over Innistrad Remastered

When Obsessive Skinner enters the battlefield, put a +1/+1 counter on target creature.
Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, put a +1/+1 counter on target creature.

Shadows over Innistrad

Both of Obsessive Skinner's abilities can target Obsessive Skinner itself.

Because you consider only the characteristics of a double-faced card's front face while it's not on the battlefield, the types of its back face won't be counted for delirium.

In some rare cases, you can have a token or a copy of a spell in your graveyard at the moment that an object's delirium ability counts the card types among cards in your graveyard, before that token or copy ceases to exist. Because tokens and copies of spells are not cards, even if they are copies of cards, their types will never be counted.

Most triggered delirium abilities use an intervening "if" clause. There must be four or more card types among cards in your graveyard in order for these abilities to trigger, otherwise they never trigger at all. There's no way to have the ability trigger if there aren't enough card types, even if you intend to raise that number in response to the triggered ability. The number of card types is checked again as the trigger resolves, and if it has become too low somehow, the ability does nothing. If which card types are in your graveyard changes but the quantity of card types stays the same (or increases), then the delirium triggered ability will still resolve.

The card types in Magic are artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery. Supertypes (such as legendary and basic) and subtypes (such as Human and Equipment) are not counted.

The number of card types matters, not the number of cards. For example, Wicker Witch (an artifact creature) along with Catalog (an instant) and Chaplain's Blessing (a sorcery) will enable delirium.