Cards in play carry over between rounds, with the winner of the previous round going first, and the loser drawing a new card (more often than not, going second is advantageous.) It's the final round, with myself and Rosewater tied at 2 rounds a piece
There are also a couple one-off elder dragons: Modern Horizons 2 printed Piru, the Volatile as the first wedge tri-color elder dragon, and Final Fantasy Commander brought us Hraesvelgr of the First Brood
Of course, you can go the Red Zone route by making Atemsis unblockableRogues Passage is good and Sun Quan, Lord of Wu will get you around most armies
Slash of Light Rating: 4/10 Your average deck is usually not going to control enough creatures to make Slash of Light a good pick, but the equipment deck should have enough extra permanents around to supplement it
Great for Brainstorm: Again, sort of a budget fetchland
Protection is an obvious one