You will have to play it after combat to get the token, and that will be fine if you build your deck with this in mind

Alela, Artful Provocateur Aminatou, Veil Piercer Arna Kennerd, Skycaptain Bane, Lord of Darkness Chromium Chromium, the Mutable Dakkon Blackblade Dromar, the Banisher Elenda and Azor Eriette, the Beguiler Ertai, the Corrupted G'raha Tia, Scion Reborn Halfdane Inquisitor Greyfax Kamiz, Obscura Oculus Lady Evangela Marneus Calgar Merieke Ri Berit Nevinyrral, Urborg Tyrant Nihiloor Noctis, Heir Apparent Noctis, Prince of Lucis Oloro, Ageless Ascetic Queza, Augur of Agonies Raffine, Scheming Seer Ratonhnhak:ton Saruman of Many Colors Sefris of the Hidden Ways Sen Triplets Sharuum the Hegemon Sidar Jabari of Zhalfir Soundwave, Sonic Spy Sydri, Galvanic Genius Temmet, Naktamun's Will The Destined Warrior The Ever-Changing 'Dane The Master of Keys Tivit, Seller of Secrets Toluz, Clever Conductor Urza, Chief Artificer Varina, Lich Queen Y'shtola, Night's Blessed Yennett, Cryptic Sovereign Zur the Enchanter Zur, Eternal Schemer

With that being said, she could do really well in a shell with the right explosiveness
Meanwhile, Arasta generates a spider any time an opponent casts an instant or sorcery and Twin-Silk Spider gives you two bodies right away