Hat - MTG Multiplayer Variant

Pre-Game:
1. All players write their name on a piece of paper and put it into
a hat, there is also one piece of paper with the word "no" and one
with the word "yes", all players then draw one piece out of the hat
not revealing to the other playes what they drew.

2.  throw away the names that are left in the hat(or put them where no
one can see them in case you plan on playing another game)

Game Rules:

1. The name that the player draws determines who they can 'see'. A 
player who draws either A) their own name, or B)"Yes" can see everyone,
a player who draws "no" can see no one.

2. Seeing refers to which players you can directly affect with targeted
abilities and spells, and which players you can attack.

3. When you defeat someone you get their piece of paper with a name, you
can now add this to your list of people who you can see, once again, you
do not reveal this to the other players.

4. If someone targets you with a spell or ability, or if they attack you,
you can now see them, they are therefore fair game for you to attack, or
to target with your own spells or abilities.

5. Global enchantments (or spells like Wrath of God) will make you seen
by anyone who they actually affect, thus a Crusade would make everyone
who controls a white creature see you, you however could not see them.

6. Global enchantments with triggered abilities will allow you to see the
person who triggers it, and will allow the person who triggers it to see you.
(e.g. Rhystic Study)

A small example game:

we have 4 players, john, lina, mike, and laura. they put their names into
the hat and draw.  John draws 'no', lina draws 'mike', mike draws 'yes', and
laura draws 'lina'.  The game progresses for a while with no one doing anything
but building up, eventually laura builds up an army and attack lina, hoping to win
but lina pitches her elvish spirit guide to power a fog, lina can now see mike
and laura (since laura attacked). john still can see no one, next turn mike decides
to attack john, thinking john looks like he's in bad shape, john casts a darkness,
mike then gains 40 life with atalya, samite master, in response john casts false cure,
mike dies, john gets mike's piece of paper (which says yes), now john can see everyone,
lina can see laura (since mike is dead), and laura can see lina, john lets lina and
laura fight it out until laura wins, she gets lina's piece of paper(which says mike,
and is now useless), john can see laura, laura can see no one who's left in the game.
John builds up and attacks laura, now they can both see each other and resolve the game
as normal.