For some analysis on these cards, let's turn to our resident Magic expert Greg Burke, who describes them thusly: "The card is a 4 cost enchantment that when played allows the player to draw 3 cards, and then discards 2
Oversold Cemetery's ability will check your graveyard as your upkeep begins, before any player has the opportunity to take any actions
Manta Ray is a three-drop 3/3 with Islandhome, so it cannot attack without your foe having an Island
Top vote with non-zero legs
As Dragons traditionally sport mana costs on the higher side, Dragon Tempest provides all creatures with flying under its owner's control with haste, meaning these Dragon mana investments can be used the turn they're played
Cephalid Coliseum The pain on Cephalid Coliseum isnt great, but as a cEDH option to dig for cards quickly, you can do worse