While extra turns are few and far between in Wyleth's colors there are plenty of ways to take extra combat steps, my personal favorite is Seize the DaySeize the Day since it has the downside of only being one creature, and the upside of being recastable a second time or even castable if it gives milled, discarded or countered
Urabrask / The Great Work Spellslinger decks will feel right at home with Urabrask, who pings opponents and gives you red mana every time you cast an instant or sorcery
Thalia If we move away from Sorin in the sideboard (possibly toward Obzedat), this gets better
Tier 3 PSA / BGS / CGC graded slabs: Once graded, cards live in dedicated slab cases
Elesh Norn, Grand Cenobite Few creatures flip a board state as fast as Elesh Norn, Grand Cenobite
This version of Biancas Devotion is number 209/162 in Temporal Forces