Orzhov Demons (1 player) : Orzhov Demons is a midrange deck that can curve Demon Wall into Unholy Annex, turning the enchantment into a life-draining powerhouse
Then you can kick it for one mana to give it +4/+4 too, like a better Giant Growth, this is a great card everywhere, but an essential in Poison/Infect, Boggles and Voltron brews for those reasons
Heliod 2.0 plus either Walking Ballista or Triskelion results in infinite damage and lifegain, and its already a rock-solid god without the combo potential, making it one of the best mono-white commanders
Just be mindful that if your opponent can respond mid-loop with a removal or bounce spell, you could end up losing your entire board
Gossifleur [C] Leafage: 10 damage
As I've explained before, Timmy, in general is more accepting of wide variance mechanics while Spike is the least accepting