I like making my Cube games resemble Constructed games, so Ive also gone heavy on card types like mana-dorks and cheap spells, to mimic the fast and interactive nature of modern Magic
Despite being insanely strong, theres a real chance that Ocelot Pride could be knocked off this list before too long
Tidus, Yunas Guardian has the ability to move a counter from any target creature onto another target creature, and hes also got the unique Cheer ability, which allows him to draw cards and proliferate whenever one or more creatures (that the player controls) deals combat damage
Kodama's Reach
Though Reconnaissance Mission and Bident of Thassa are effectively strictly better versions of Coastal Piracy, a deck that wants one will usually benefit from all three
Malfegor Malfegor discards your entire hand, providing fantastic fuel for cards like Glint-Horn Buccaneer and the like