Virus Beetle just reprinted for Standard counts too
Each of the Pokmons attacks will have an energy requirement so that many of the correct energy cards need to be equipped
Halvar is seless, stalwart, unwavering, and always the most sensible person in any room
2 Mech Island, By Robin Olausson The full-art Mech lands introduced in The Brothers War break a fundamental rule of basic lands by featuring mechanical characters prominently rather than just landscapes
Sliver Queen makes more Slivers, a handy feature if you're playing all five colors and have Sliverswhich would be a reason to have Sliver Queen and lots more Slivers
Alphinaud Leveilleur* 4 Mana for Alphinaud is a lot, given what else you can get in card draw there, and the fact its only on your second spell each turn combined with a poor size make this a creature you probably leave out of your party, unless you are wanting to make use of its partner