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I asked that before. On all counts,No. They dont

Yes, you cant tap em for mana the turn they are played, but, if your myr battlesphere is already summoned the last turn, and you just happened to summon a myr this turn, even though the summoned myr has summoning sickness, you can tap it to boost the battlesphere's power.

Note that artifact spells are artifact cards that you puton the battlefield. The tapping, my summoning by battlesphere, etc, are abilities. Not spells.

[QUOTE=thegathered]you can't pay 0 for X it has to be more than 0[/QUOTE]

There are injunctions against choosing fractional numbers and negative numbers, but not against choosing zero. Some specific cards may disallow it, like Benalish Commander, but not the rules in general.

107. Numbers and Symbols

107.1. The only numbers the Magic game uses are integers.

^ Zero is an integer.

107.1a You can’t choose a fractional number, deal fractional damage, gain fractional life, and so on. ...

107.1b Most of the time, the Magic game uses only positive numbers and zero. You can’t choose a negative number, deal negative damage, gain negative life, and so on. ...


(digressive edit: the game does make limited use of negative integers; you can't choose them when asked to choose a number, but the game does keep track of certain values below zero, such as life totals and a creature's power and toughness:

107.1b Most of the time, the Magic game uses only positive numbers and zero. You can’t choose a negative number, deal negative damage, gain negative life, and so on. However, it’s possible for a game value, such as a creature’s power, to be less than zero. If a calculation or comparison needs to use a negative value, it does so. If a calculation that would determine the result of an effect yields a negative number, zero is used instead, unless that effect sets a player’s life total to a specific value, doubles a player’s life total, sets a creature’s power or toughness to a specific value, or otherwise modifies a creature’s power or toughness.
Example: If a 3/4 creature gets -5/-0, it’s a -2/4 creature. It assigns 0 damage in combat. Its total power and toughness is 2. You’d have to give it +3/+0 to raise its power to 1.
Example: Viridian Joiner is a 1/2 creature that says “{T}: Add an amount of {G} to your mana pool equal to Viridian Joiner’s power.” An effect gives it -2/-0, then its ability is activated. The ability adds no mana to your mana pool.

So the game does make use of the full spectrum of integers, not just the positive ones.)

Thank goodness for that...

Another question came up in one of the games I played today regarding the battlesphere. They guy who used it played his tokens and then proudly announced that they could be tapped and used as mana just as some of the other Myr can. I called shenanigans, and he eventually agreed not to do it until we checked...is that something that he can do?

[QUOTE=Lord_Azael]Thank goodness for that...

Another question came up in one of the games I played today regarding the battlesphere. They guy who used it played his tokens and then proudly announced that they could be tapped and used as mana just as some of the other Myr can. I called shenanigans, and he eventually agreed not to do it until we checked...is that something that he can do?[/QUOTE]

No, it isn't.

There are only two cases when you can a permanent for mana:
- The permanent has a basic land type (plains can be tapped for :manaw:, islands for :manau:, etc.).
- Some ability or effect says that you can. In this case there will be a card whose wording you can check for the specifics.

Myr Battlesphere doesn't enable any Myr to be tapped for mana, and there are no special rules for the Myr creature type (or any other creature type).

Those are just myr tokens. The are creatures with 1/1, and no abilities watsoever. An easier way to look at it is throught the definition. Remember, the battlesphere states you summon 4 myr tokens. They never said those token have the ability to tap for mana.The same goes to the tokens you get for sacrificing origin spellbomb and the ones you got from the myr smith.

Oh and take a look at my myr deck. I just love myrs. What you think?

http://www.mtgvault.com/ViewDeck.aspx?DeckID=115907