mtg cards like slicer Budget EDH Deck Tech: Slicer, Hired Muscle Strategy haste Whenever Slicer deals combat damage to a player Are there any commanders like

For each purchased Mercadian Masques booster box, the buyer was presented a Serra Angel foil card while supplies lasted

No it does not

"Oversize cards" is not a "set" by the usual Magic definition, but I'd guess your online store categorizes them that way to make it clearer to customers they're buying an abnormal card

Does it say sliver in there somewhere

$0.99 Quick Sliver Legions $2.79 Diffusion Sliver 2015 Core Set $3.99 Cloudshredder Sliver Modern Horizons $1.29 Crypt Sliver Legions $0.69 Sentinel Sliver 2014 Core Set $0.35 Striking Sliver 2014 Core Set $0.79 Predatory Sliver 2014 Core Set $2.79 Spiteful Sliver Modern Horizons $1.99 Manaweft Sliver 2014 Core Set $14.99 Sliver Hive 2015 Core Set $0.49 Lavabelly Sliver Modern Horizons $2.29 Venom Sliver 2015 Core Set 0 results found

(Well, not literally as much as you want.) In all seriousness, after casting fight spells or board wipes, it's often hard to attack due to toughness, but the point is that Wolverine can ignore that