no doubt itll find its place, at least with players already using Steel ink-type decks
But Emeria Shepherd is much different in power and respect
The primary concern is that Hasbro has been overproducing Magic cards which has propped up Hasbro's recent [earnings] results but is destroying the long-term value of the brand," Haas wrote in a November note
(7/12/2019) If the top card of your library has a morph ability, you can cast it face down from the top of your library, even if it's normally not a colorless card.

Arcane Bombardment Arcane Heist Arcane Proxy Arcane Savant Bloodthirsty Adversary Blue Mage's Cane Chandra, Hope's Beacon Chandra, Pyromaster Demilich Dual Strike Elemental Expressionist Elite Arcanist Emeritus of Truce Ether Eye of the Storm Finale of Promise Flawless Forgery Founding the Third Path Galvanic Iteration God-Eternal Kefnet Impulsivity Increasing Vengeance Isochron Scepter Jaya, Fiery Negotiator Magar of the Magic Strings Mizzix's Mastery Mnemonic Deluge Muddle, the Ever-Changing Myra the Magnificent Mysterious Stranger Panoptic Mirror Psionic Ritual Refuse // Cooperate Renegade Bull Roving Actuator Saruman of Many Colors Signature Spells Skycoach Conductor Soundwave, Sonic Spy Spellbinder Spellbinding Soprano Spelltwine Spellweaver Volute Stella Lee, Wild Card Storm of Memories Stormsplitter Surge to Victory The Tale of Tamiyo Wizard's Spellbook Wizards of Thay

If you controlled a creature with power 4 or greater when you declared Picnic Ruiner as an attacker, it doesn't matter whether you still control one as its ability resolves