Scour the Laboratory

Delirium — This spell costs {2} less to cast if there are four or more card types among cards in your graveyard.
Draw three cards.

Jumpstart: Historic Horizons

Eldritch Moon

Delirium — Scour the Laboratory costs {2} less to cast if there are four or more card types among cards in your graveyard.
Draw three cards.

If an effect allows you to cast Scour the Laboratory from your graveyard, count the number of card types among cards in your graveyard after moving Scour the Laboratory from your graveyard to the stack. If its delirium effect no longer applies, it costs {4}{U}{U} to cast.