You should only play Intervention Pact in decks built to force another non-white player to cast the card, using something like Hive Mind to force the upkeep trigger on someone else
It was actually the first card that had its artwork changed for localization in over ten years, since the Neo Genesis expansion
"Official Reprint Policy"
Round out with targeted singles Once you have opened your boosters, take stock of what you pulled
$32.99 Sire of Seven Deaths Foundations $9.49 Kozilek's Command Modern Horizons 3 $64.99 Ugin, Eye of the Storms Tarkir: Dragonstorm $4.49 Vexing Bauble Modern Horizons 3 $5.99 Karn, the Great Creator War of the Spark $2.29 Glaring Fleshraker Modern Horizons 3 $0.59 It That Heralds the End Modern Horizons 3 $2.79 Sowing Mycospawn Modern Horizons 3 $3.49 Spawnbed Protector Modern Horizons 3 Commander Decks $20.99 Ugin's Labyrinth Modern Horizons 3 $2.99 Disruptor Flute Modern Horizons 3 $8.99 Thought-Knot Seer Oath of the Gatewatch 0 results found
Overall, if you are looking to play a Dark World deck, I strongly recommend to start from 2 or, better, 3 copies of the structure deck to fuel more cards to your strategy and to remove those that weaken it