Though its incredibly fun to do so, not to mention satisfying when you play with a deck that youve put together yourself (especially if it performs well!), it can be very time consuming
Toxrill slowly weakens your opponents creatures until they die
Rates vary based on order total
The elegant solution was to have Master of Waves create 1/0 creature tokens, then have the Master of Waves give them +1/+1
It is a Hero's Demise, a Clone or a Sculpting Steel, all of which are cards that often depend on what your opponent is doing
Megamorph takes away a bit of your choice in the matter, as it encourages you to play creatures face-down so you can get the counter (but many Morph creatures had abilities from being turned face up, so its not radically different)