Are you asking for a new format for your whole group, or just for yourself? I'm assuming you mean this only applies to you.
Just in case there's some confusion, this a joke scenario that I find funny. I'm not actually asking for help. I just think it's a fun thought experiment.
In the scenario, this would only apply to the fictional person who requested the help. Not his friends.
I could be way off-base on the level of casual you are suggesting here. Maybe you should throw a sample metagame up, like you mentioned.
For the purpose of discussion, here is a sample list which should be the approximate power level to expect in this hypothetical:
4 Hedron Crab
4 Haunting Echoes
4 Mind Funeral
3 Sen Triplets
3 Pillary of the Sleepless
3 Souls of the Faultless
3 Psychic Drain
3 Into the Roil
1 Summoner's Bane
2 Grim Discovery
1 Soul Stair Expedition
3 Paralyzing Grasp
2 Consult the Necrosages
3 Guul Draz Specter
25 Lands (Plains, Swamps, Islands, and some uncommon and common lands that come into play tapped and/or fix mana)
As has been pointed out, the only winning play with these constraints is to not play.
However, the idea is to answer with the most optimal format, even though not playing is actually the winning move.
This creates a kind of irony that I find amusing.