Theres a little bit of Item lock with Cryogonal, but its used mostly to slow down the opponent on turn 1, not to lock them out of the game
You open the box, shuffle up, and play
Memnite's CMC is also 0, like that of Living End, but since Memnite has a printed mana cost, it may be played from the hand normally, and no mana is spent
[Card]Aetherworks Marvel[/Card] [Card]Dig Through Time[/Card] [Card]Smugglers Copter[/Card] [Card]Emrakul, the Promised End[/Card] [Card]Emry, Lurker of the Loch[/Card] [Card]Felidar Guardian[/Card]/[Card]Saheeli Rai[/Card] [Card]Kethis, the Hidden Hand[/Card] [Card]Mox Amber[/Card] [Card]Narset, Parter of Veils[/Card] [Card]Nexus of Fate[/Card] [Card]Oko, Thief of Crowns[/Card] [Card]Once Upon a Time[/Card] [Card]Prized Amalgam[/Card] [Card]Teferi, Time Raveler[/Card] [Card]Treasure Cruise[/Card] This is my to do list
The other card Prosper narrowly beat out is Toxrill, the Corrosive, another unique card that entices me to build a completely new deck, rather than simply slotting into an existing one