mtg commander deck undead unleashed Wizards of the Coast Magic Innistrad Midnight Hunt Wilhelt Deck, 1 ct Utilize this ability to activate the coven mechanic for Leinore and her companions Undead Unleashed Upgrade Guide -

Arasta of the Endless Web Create Spider tokens when opponents cast instant or sorcery spells with Arasta of the Endless Web

I particularly enjoy untapping, so I would put Clara with The Ninth Doctor

Another fringe artifact-based storm deck, Sidisi tends to draw all the cards at once at the expense of life via Ad Nauseam, but it uses the same method of casting artifacts into Aetherflux Reservoir to win

It does give you a card when it dies

Alisaie Leveilleur and Alphinaud Leveilleur are two separate cards but are partners which means when you play one, you may search your deck for the other, and add it to your hand, which makes sense since their abilities complement each other