Effects that trigger "whenever a creature explores" trigger as appropriate
If a creature enters the battlefield as a copy of or becomes a copy of a creature whose blitz cost was paid, the copy won't have haste, won't be sacrificed, and its controller won't draw a card when it dies
Its hard to imagine any of the older decks being salvaged by something as powerful as the new dual ink team cards
The only precon available for preorder at the moment is Revival Trance which, if I'm honest, feels like a bit of a slight towards Terra
The word dominant has a very specific and powerful meaning in gaming, so I wont go quite that far
Like I already said these arent exact numbers, but it should give you some guidance on what your deck needs