- If you run ramp people will rush you to death, TCO rushes are very fast, or control you to death since they can run more than 1 upheaval or Nairel (Which is very difficult to deal with by some OCG decks
- Beware of Mana Burn Control or discard control, very common and can kill off most ocg decks
- Lots of unblockables or blocker removal so blocker strategies ineffective
- Transmogrify very dangerous for various types of spell decks/ramps
- A lot more cheap blockers so prepared with mass removal
I assume 90 percent of tcg players will not duel ocg but there it is, sometimes it happens.