I do believe this to be a perfectly fine strategy, particularly if you open a very powerful multicolored card, or if you receive some signals that a particular combination might be underdrafted
Pair it with cards that give you extra mana during your opponents turns, like Wilderness Reclamation, to really go off
// Bahamut, Warden of Light Legendary Enchantment Creature Saga Dragon 5/5 (As this Saga enters and after your draw step, add a lore counter.) I, II Wings of Light Put a +1/+1 counter on each other creature you control
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For six mana, Random Encounter mills your top four cards and puts all creatures milled right into play with Haste
Whenever a modified creature you control leaves the battlefield, put a +1/+1 counter on this artifact