2 Alms Beast

Celestial Force

3 Culling Sun

3 Deathpact Angel

2 Dictate of Erebos

2 Dictate of Heliod

4 Edge of the Divinity

Gideon Jura

4 High Priest of Penance

Magister of Worth

2 Merciless Eviction

4 Mortify

Obzedat's Aid

Teysa, Envoy of Ghosts

4 Tidehollow Sculler

2 Soul Link

Last Laugh

Crovax Ascendant Hero

4 Orzhov Guildgate

4 Isolated Chapel

4 Fetid Heath

5 Plains

5 Swamp

you guys just playing casually or what?

Yeah, pretty much.

I would definitely make room for Obzedat, Ghost Council, Blood Baron of Vizkopa, Lingering Souls, and one of the Sorins. But aside from those... there are sooooooo many options. At current, it looks like you're lacking in win conditions so I could see where these would help you beef things up.

Could you give us more info on what your friend typically plays? The biggest issue with trying to give feedback on casual decks is that you're asking us to evaluate a set of 60 cards and how it might compare to the ENTIRE catalog of magic (in case you were curious, this is 13,651 cards!!! see http://mtgsalvation.gamepedia.com/Magic:_The_Gathering_statistics_and_trivia), as casual is not bound by any restrictions like the major sanctioned formats.

ty is pretty much spot on...

the only advice i would give is to stay away from cards that specifically crush just your casual opponents... for instance, if your friend is on a mono red deck, main decking Conversion against them is probably a dick-ish move and can lose you a magic friend :P