Although the price for summoning does seem quite steep, the cards stats arent the only things making this a worthwhile summon
The card allows you to find any card you need, which is incredibly valuable in the TCG
A clever early use of it can quickly put its player into a commanding lead that the opponent may be unable to catch up to
The base example is always Lightning Bolt, which deals three damage for one mana, and the closer the card is to this equation, the better: Incinerate and Lightning Strike were and are staples of Aggro decks in Standard because they deal 3 damage for while Exquisite Firecraft, another notorious example, deals 4 damage for
And your ratios are way off, he stated matter of factly, ticking off each bullet point on his fingers
Im running Wheel of Fortune, Memory Jar, Reforge the Soul, and Magus of the Wheel as my main wheels, with some additional discard outlets like Chandra, Flamecaller, Nahiri, the Harbinger, Geier Reach Sanitarium, and Mask of Memory