I'm going to refill out my stuff... mine kinda looks pathetic.

How long have you been playing Magic?: I have been playing about 2 years now.
Favorite mono-color: Green. In an RP my favorite would be red or white but IRL I'm not a big strategist in Magic and I tend to just cramp in a ton of high power monsters and swarm.
Favorite dual-color: Red/White, Red is a very powerful, often violent color but combined with White they tend to balance out and make a really cool combo.
Favorite tri-color: Red/Green/White. The combination of Green allows me to also have my favorite high powered monsters in play...
Favorite plane: Inistrad. Angels are prominent here, they are very real and very powerful beings. But sadly, just as susceptible to corruption as ordinary people are...
Favorite set: New Phyrexia. Infect, Myr, The Praetors. Nuff said.
Favorite mechanic: Regenerate. When you have a ton of creatures on the field that you want to keep there regeneration is really good to have.
Favorite card: 

[hider=My Hider]
[img]http://i.imgur.com/kzZmvra.png[/img]
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Favorite archetype/deck: Boros.
What formats do you play?: Modern, Casual, Custom
Favorite format: Casual
What is your least favorite thing about Magic?: Elitists.
How much experience do you have with creating custom cards?: A lot. I'm on MTGcardsmith
Design a custom mechanic: Valor (If you control two or more other nontoken creatures Valor gives a bonus, often to power and toughness but sometimes with abilities)
Design a creature: 

[hider=My Hider]
[img]http://i.imgur.com/NHeHyzB.png[/img] (A simple, one mana creature with Valor 3, a decent guy until you get two more nontokens on the field, then he becomes superb)
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Design an instant, sorcery, artifact, or enchantment:

[hider=My Hider]
[img]http://i.imgur.com/e2S06CD.png[/img] (Really high costing but if you get it on the field it's an easy gameender, especially if you have a lot of tokens on the field)
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Design a non-basic land:

[hider=My Hider]
[img]http://i.imgur.com/qmpT1Ye.png[/img] (A great land to begin with, but you can pay mana, tap it and get a token, or pay a freakishly high cost and get an enchantment to make your stuff Indestructible.)
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Design a planeswalker:

[hider=My Hider]
[img]http://i.imgur.com/9cp8Pll.png[/img] [img]http://i.imgur.com/oLcvdnE.png[/img] 
This guy is a flip card, had to do some fiddling since you can't make actual flip cards on MTG but he is a Planeswalker that does not gain counters at first until he hits lower than one, then he becomes a real good Werewolf Planeswalker. Loyalty's Fang's +1 was supposed to be a -2 though...)
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Do you have any ideas for a plot/setting?: (optional)