Circumventing mana costs if one of the most powerful strategies in Magic: The Gathering and K'rriik does it so well
One of the newest additions to the Magic product lineup is Secret Lairs , which are limited-time-only sales of small numbers of cards (so far, as few as one or as many as eight) directly from Wizards to consumers, with price tags in the $30 to $50 range
Complete 100-card Zada, Hedron Grinder Commander Deck
Otherwise, we need to rely on creatures that give us good value for the keywords they have
Protecting a Master splicer is a good example from my own cube
Quick Sliver Surprise Slivers Secret Lair Bonus Sheet Market Price: $149.85 2003s Legions , from the Onslaught block, produced a number of memorable Slivers including this two-mana green one that grants all Sliver cards (not just your own) the flash keyword