I think I have to be honest here before I begin that I played Magic: The Gathering religiously and competitively (The table top version) from 1993 with the release of the Arabian Nights until about 2006 just after the release of Coldsnap
4.8/10$0.17 Arc Runner Creature Elemental Ox 5/1 Haste (This creature can attack and as soon as it comes under your control.) At the beginning of the end step, sacrifice this creature
Black Lotus Autographed Alpha Price: $800,000 Magic: The Gathering's most famous flower is also its most prized card
Sword of Once and Future Price: $11.72 The last of the Mirran swords, Sword of Once and Future completes the cycle by giving you a sword that grants protection from Dimir colors
The ability to prevent life loss can also come in handy, although it wont save you from poison counters or commander damage
Herigast, Erupting Nullkite Rating: 9/10 Im far more interested in casting this Eldrazi dragon for its emerge cost than for the full 9 mana