This means that giving creatures either shroud or the human creature type stops them from being legal targets for for mutate
It creates a six loyalty planeswalker for just three mana, and gives you a valuable resource in the progress, making him a Food deck staple in the three formats hes still legal in
It punches farther up the curve than similar effects, but rewards you for the extra mana investment by giving you two extra ETBs per turn
Powerful lands are often balanced by coming into play tapped, and Amulet of Vigor overrides that restriction
The key component to this is that Legolass Quick Reflexes has split second, making it so long as it is on the stack, no one can cast spells or active abilities in response unless that ability produces mana
Smirking Spelljacker is an incredible counterspell-creature, letting you Spelljack something right off the stack