Here's a modified Deck:
Ace of Spades: 30th level plus character appears and attacks drawer
King of Spades: 20th level plus character hates drawer, plots against him/her
Queen of Spades: Entire party of adventurers levels 5 through 10 appear, attack drawer
Jack of Spades: Wizard infuriated against drawer, casts Wish against him
Ten of Spades: King of nearby country orders execution of drawer, sends adventurers to do the job
Nine of Spades: Nearest character above 10th level enraged at drawer, come to attack.
Eight of Spades: Nearest group of characters levels 1 through 5 enraged at drawer, come to attack.
Seven of Spades: Paladin appears, demands Deck. If not given Deck, attacks.
Six of Spades: Cleric appears, demands Deck. If not given Deck, hurls Curse on drawer (automatic, no save)
Five of Spades: Wanted signs posted for Drawer in nearest country (for major offense.)
Four of Spades: Attention of all monsters within 50 miles drawn: they will eventually show up at the locale. If the party is still there, they may be hostile.
Three of Spades: Nymph appears and takes Deck. If party resists, must save versus Blindness. If party still resists, must save or die.
Two of Spades: Nearest Dryad aroused, charms Drawer (no saving throw.) Party may attempt to reclaim victim of Dryad.
The point being, would you draw from this Deck, even if it had a lot of good things in it?
If you did, and a lot of such Decks were laying around, eventually Mordenkainen, Elminster, and Dalamar would get tired of being subjected to summonings (with no save), forced combats (no save), mind altering effects on them (no save), and so on. They would put an injunction on these Decks.
(imagines a group of kender with a Deck of Many Things, gets horrified look)
Eventually, all these Demon Lords and Archdevils and whatnot, are going to say: Well, that's it. Too much interference from Toril (or Oerth, or Krynn) with these Decks. Time to take an army and OBLITERATE a country or two, to make a point.