The Ledyba is crisp and has great colors
Absolutely nothing, just ignore this big flier swinging in at the guy next to you
The commander is tracked across zone changes for this purpose (for example, if one player takes control of another player's commander, any damage that commander already dealt is still counted)
Anafenza, the Foremost Most of the scary things that happen in the graveyard concern creatures
Players need to handle the encounter card bad they receive every turn---could be an enemy to fight, something restricting your play options, a damaging skill test, or something worse---and also make progress against whatever the scenario goal is, all in the span of three actions
You probably began here, unless you went for a top-down design based on something you like