No, the true power of a Platinum Angel is that savvy players are unwilling to engage with game-winning plays until it leaves the battlefield
Chief made a graveyard hate top 10 article last year if you want to read up on what type of cards you can expect to be up against
Drop 4-drops and swing

Aang, Swift Savior Absolute Virtue Abuelo, Ancestral Echo Aerial Engineer Alquist Proft, Master Sleuth Arcade Gannon Arcanist's Owl Archon of the Triumvirate Armored Guardian Ascended Lawmage Augury Adept Aven Mimeomancer Aven Wind Guide Ayesha Tanaka Ayesha Tanaka, Armorer Azor's Elocutors Azor, the Lawbringer Azorius First-Wing Azorius Guildmage Azorius Knight-Arbiter Azorius Skyguard Azorius thermage Barrenton Cragtreads Battlewise Hoplite Belisarius Cawl Black Bolt, Inhuman King Black Panther, Hope Enduring Boromir, Gondor's Hope Brago, King Eternal Brine Comber Bruna, Light of Alabaster Captain America, Living Legend Cat-Owl Celestial Regulator Cephalopod Sentry Chrome Courier Cid, Timeless Artificer Cirina Bargainspinner Cloudblazer Council of the Absolute Crystalline Sliver Cunning Breezedancer Daxos of Meletis Deepchannel Duelist Deepway Navigator Deft Duelist Dennick, Pious Apparition Dennick, Pious Apprentice Denry Klin, Editor in Chief Departed Soulkeeper Deputy of Acquittals Deputy of Detention Devoted Grafkeeper Don & Leo, Problem Solvers Dorothea, Vengeful Victim Dragon Man, Reformed Robot Dragonlord Ojutai Dream Trawler Drogskol Captain Drogskol Reaver Eclipsed Merrow Elder Owyn Lyons Elite Guardmage Emissary of Soulfire Empyrean Eagle Ephara, Ever-Sheltering Ephara, God of the Polis Epistolary Librarian Errant and Giada Esper Cormorants Ethercaste Knight Ethereal Valkyrie

You get to play the spells for free, sure, but you dont get to choose which ones you want out of the pile and you pay an extra 3 mana