2014 Making abilities help

So, after making a few modded decks for 2014 I feel I've gotten the hang of this stuff. But being a newbie I still have a bit of trouble with how to create a few basic abilities for cards:
-Multikicker (I know how to make kicker, but I still don't get how to make something like Wolfbriar Elemental, and instead have to use a workaround a la giving "X" to it's mana cost instead).
-"When this creature leaves the battlefield..." (Thragtusk problem! I have a workaround in mind to copy the "triggered ability" section for each possible area Thragtusk can go to activate the beast tokens, but I find that uneconomical and tedious. Is there a single line of code that can do everything?)
-Checking how many cards are in a player's hand. (I'm trying to add Dreamborn Muse, and the only part of the code missing is the part where the game checks how many cards are in a player's hand each upkeep. So far I can't find a function that can perform that check, and I don't have DotP 2013 on my PC, so... any help is greatly appreciated).
Thanks!
-Multikicker (I know how to make kicker, but I still don't get how to make something like Wolfbriar Elemental, and instead have to use a workaround a la giving "X" to it's mana cost instead).
-"When this creature leaves the battlefield..." (Thragtusk problem! I have a workaround in mind to copy the "triggered ability" section for each possible area Thragtusk can go to activate the beast tokens, but I find that uneconomical and tedious. Is there a single line of code that can do everything?)
-Checking how many cards are in a player's hand. (I'm trying to add Dreamborn Muse, and the only part of the code missing is the part where the game checks how many cards are in a player's hand each upkeep. So far I can't find a function that can perform that check, and I don't have DotP 2013 on my PC, so... any help is greatly appreciated).
Thanks!