Typal coupling allows for great flavor and more synergistic gameplay, making cards far more viable than they would be without it
If you're the monarch, each of those players mills ten cards instead
Let's face it this early form of collect evidence is expensive, good to combat close games, but still limited in its effectiveness
if Sunfrill Imitator copies a legendary creature, Sunfrill Imitator will also be legendary, but because its name remains Sunfrill Imitator, the "legend rule" won't cause either of them to be put into the graveyard
Summon Undead does cost a bit of mana, but the important part of its effect is the self-mill
It's a on 1 on 1 format which has inherently different dynamics to multi-player