A lil trigger help plz?

ok i want to make a trigger where every, lets say 10 mins, blight will creep further down the mountian i have on my map.. i also want to make the blight give an advantage to undead units like faster regeneration (i know it does that but i want to increase how much it regens) finnaly, i have a river running through and i want to make it so when my units walk on it they are slowed like 10 % and decreased atk speed 15% or sumthing like that. I dont have Jass and i was wondering if ne1 can help me with these. i really dont know how to do it.. HELP PLZ!!! :\

The creeping blight is probably the most work: You would need a region that gets covered with blight defined for every 10 minutes, so, if the game lasts an hour, you would need 6 regions each one bigger than the previous, and every 10 minutes you would create blight at a bigger region (in that way, making it "creep" forward).

If you want undead to have a bigger advantage on blight, just increase the HP regeneration of all undead units to be bigger.

To get the river to slow things down, the easiest thing I can think of would be putting in the middle of the river invisible(the model named "zone indicator") and unselectable(the "locust" or "aloc" ability) and non moving/attacking(move speed 0; no attacks enabled) unit that has a modified "slow aura(tornado)" so that the range of the aura just covers the width of the river, and that it targets all players.