MTG Salvation

How would I correctly word this:

Snowball deals damage to target creature or player equal to the number of turns the game has lasted.

Also, what is a turn - is it from one player's upkeep to their end phase, or from one player's upkeep to their opponent's end phase?
If you're on the play and you drop this first 'turn', then how much damage would it deal?

Also this:

Equipped creature gains protection from Zombies and from Skeletons.
Whenever equipped creature destroys a Zombie or Skeleton, return it to play under your control.

EDIT: also this:

Double the amount of mana in your mana pool.

And should it be R or G?

For the second one, Doubling Cube.

For the first one, the game doesn't keep track of "turns," just "your turns."

Plus, there's a reason we don't use lots of turn-counting: It's because you don't remember them after the 20th turn or so.

Equipped creature has protection from Zombies and from Skeletons.
Whenever a Zombie or Skeleton dealt damage by equipped creature this turn is put into a graveyard, return that card to play under your control.

Sword of Fire and Ice
Scythe of the Wretched

Hmm... is there a card in Mirrodin block that can answer the turn question?

EDIT: I'm sorry. That was a rhetorical question, since Doubling Cube, Sword of Fire and Ice, and Scythe of the Wretched are all from Mirrodin block. I just thought that was funny. I don't think there really is a card in Mirrodin that would answer that question :xd:

Thanks both.

Quote from Morsetlis »

For the first one, the game doesn't keep track of "turns," just "your turns."

Plus, there's a reason we don't use lots of turn-counting: It's because you don't remember them after the 20th turn or so.

Huh. Well, it/you should.

Quote from silvercut »

Hmm... is there a card in Mirrodin block that can answer the turn question?

I dunno. Is it Beacon of Tomorrows?

Serra Avenger from TS keeps track of the first three turns only. Maybe you can do something with that.

A turn belongs to a player and goes from untap to cleanup.... sometimes multiple cleanups.

You cannot ask the players to count the turns of the game. You just can't do it. So don't.

This, Equipped creature gains protection from Zombies and from Skeletons.
Whenever equipped creature destroys a Zombie or Skeleton, return it to play under your control.
Becomes this:

Equipped creature has protection from Zombies and from Skeletons.
... and the second ability is quite problematic.

Creatures can't destroy other creatures. Effects destroy creatures. Effects aren't generated by creatures. They're generated by abilities or are State-Based Effects generated by the rules.
There is no way to relate a creature dying and to point the finger of 'cause' at a creature. It can't be done. You can do this:

"Whenever a Zombie or Skeleton dealt damage by equipped creature this turn is destroyed, return that card to play under your control."

Funny how this could end up reviving animated artifacts which were Zombies when they were destroyed.