It's a cute Hatchu, but it's just somewhat mediocre compared to the fun of many others
It is not that far off a Brainstorm and keeps you hitting new things in subsequent draws should you not have that shuffle effect handy
Since these cards are often faked, it's safest to buy a graded copy anyway, which is much easier to appraise than a raw copy
Leshrac's Sigil's art is cool, it reminds me of a Hellblazer comic book cover
In fact, many of the best stuff running around is oriented toward the big side (Stoneforge Mystic, Restoration Angel, Teferi, Mage of Zhalfir, Consecrated Sphinx, Vampire Nighthawk, Gray Merchant of Asphodel, Feldon of the Third Path, Azusa, Lost of Seeking, Silklash Spider, Courser of Kruphix, Prophet of Kruphix, Brago, King Eternal, Kuldotha Forgemaster), and thats in addition to creatures specifically designed and included for defense like Walls and other cards with defender