The more new things players have to get excited about, the more attention is placed on new things, and moved away from World Shaper
Also a decent way to slash an opponent's big stompy green creature in half, just don't do it to one with a good ETB trigger
The downside is that they tend to sit in your hand while you wait for the right time, or get inked when you could have used them the next turn
Foil Cards Foil cards take a bit more work than regular cards, between prepping the card to alter, and the extra difficulty of painting with the necessary transparency to really show off the foil
This is a great supplement to a life gain compliment in a deck but is far from enough to fuel a Necropotence engine or hold off a red mage
If the trade is a little uneven, it's always cool to let the other side just grab stuff for value to even up the trade