Raving Visionary is a uncommon Creature — Merfolk Wizard card from Modern Horizons 2 (MH2), collector number 56. Current market price: $0.16 (foil $0.19), TCGplayer market prices via Scryfall.
{U}, {T}: Draw a card, then discard a card. Delirium — {2}{U}, {T}: Draw a card. Activate only if there are four or more card types among cards in your graveyard.