Shandalar Questions Manalinks not staying?

I have got the 2012 Shandalar and I am noticing in game that I got manalinks so my life was up to 20 and that as I progressed in the story my life slowly ended up getting smaller. I can't seem to find the old rules for shandalar so I am not sure why this is happening.
Another thing is I was wondering is there a button to hold on the keyboard to react to my opponents turn or upkeep because I notice I can't pay upkeep cost on my turn because it doesn't let me...I had paralyze on my guys and didn't give me an option to untap..
Also I had disrupting scepter out and I want to be able to tap opponents lands down or creatures before he attacks but is this possible?
Another thing is I was wondering is there a button to hold on the keyboard to react to my opponents turn or upkeep because I notice I can't pay upkeep cost on my turn because it doesn't let me...I had paralyze on my guys and didn't give me an option to untap..
Also I had disrupting scepter out and I want to be able to tap opponents lands down or creatures before he attacks but is this possible?