1. Lifegain Voracious Wurm
[follow this link]
2. Zoo Beatdown Mono-green
[follow this link]
3. Bant Hexproof
[follow this link]
Here are the devotion practice decks.
1. Black
[follow this link]
2. Green
[follow this link]
And here are the planeswalker prep decks (Ral Zarek and Vraska)
1. Ral Zarek
I had too much fun here. The link is a pointer to several posts.
[follow this link]
2. Vraska the Unseen
[follow this link]
And here is a gratuitous show of my favorites Magic art work (nice devotion to black too!)