How can I make this deck more fun to play in a casual playgroup. Keeping in mind the lifegain fun I like to have with it.

Yes, I know that some of these cards have rotated out of standard or have been out of standard for a while now. This is just a casual deck I put together about a year ago.

Rhox Faithmender is in the deck for to magnify the life gain from Trostani, Selesnya's Voice. Looking to potentially update this deck with Journey into Nyx cards some. Thinking about maybe adding a Ajani, Mentor of Heroes, but looking at other suggestions as well, keeping in mind that I'd like to keep it casual/budget. Just playtest it, the amount of potential life gain in a casual gain is amazing. If I choose to add an Ajani, Mentor of Heroes activating his ultimate would be so enjoyable, especially if Rhox Faithmender in on the field.

I know Advent of the Wurm would work well in the deck also, but I'm not sure what to take out or sideboard.