In a multiplayer EDH game, form an alliance with your buddy who has {Basalt Monolith}. Enchant it with {Relic Bind} and kill everyone but you two!
That's pretty sick!
Yeah, but isn't relic binds' rules are that you have to enchant an artifact an opponent controls? Not an ally.
In a free for all multiplayer match, you can form an alliance with your opponent, but he or she remains your opponent. It's just a trust thing. You scratch my back, I'll stab-er scratch yours.
Ooh casual dirty play, I see. You'd have to form that alliance before the match but good strat.