Raving Visionary 

Creature — Merfolk Wizard
$0.12 #23778 0.27 5.2 years
Delirium — 
,
: Draw a card. Activate only if there are four or more card types among cards in your graveyard.
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Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
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+1 more matching line
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"
,
: Each player draws a card, then discards a card."