Re: Tips for my Magic deck
Well you only have 1 card that's coloured in mana, so your mana base can afford to just use basic lands. I suggest probably 20-21 to be sure that you have 2 lands on turn 2 almost all the time.
I'm not sure why you have infect myr in there, since your win conditions are not infect. I suggest that since you're going for acceleration, adding leaden and silver myr so you have the full sets of each (subtract from iron, copper, ichorclaw, and perilous myr).
Golem's heart...I dunno. 1 life per artifact seems pretty insignificant. You having only 1 of it means that you'll draw it later, which further adds to its uselessness. I would suggest finding more myr reservoirs to fill that and golden urn's slots.
The deck has a lot of emphasis on myr, so more battlespheres and galvinizers are nice.
4 Leaden myr
4 Silver myr
4 Gold myr
4 myr galvanize
4 steel overseer and/or mana myr
Bomby creatures and finishers: (7)
4 Myr battlesphere
1 sphinx soverign
4 myr reservoir
1 Tumble Magnet
4 Doom blade
12 mana myr plus galvanizer should be enough to power stuff out reasonably quick. Emerakul might still be a little difficult, but galvanizer kinda doubles your mana myr's mana output.
I love myr battlesphere, and its combo with galvanizer and steel overseer is totally awesome. :) I want to mazimize that chance by playing with a full set of galvanizer and battlesphere with an assorted number of overseers (since they might be a bit expensive).
Reservoir I went up to a full set. Depending on your taste, you might want to lower the numbers a little. They're great against removal and you can use reservoir to help preserve your life (block with a myr, bring it back with reservoir). It also just happens to be able to power out some myr while you're at it.
I liberated about 6 slots for removal. Really you can put in anything in there, but make sure you have the colours to match. I picked doom blade just because it's a common and condemn just because it's a solution to indestructible stuff like blightsteel colossus (better my opp gain 11 life than die immediately!).
I would test this out before refining it. i'll let you know how I do as well should I decide to try it out. :3