For example, at the recent Magic Spotlight Series Planetary Rotation tournament, as held on August 29-31st as part of this years SCG Con Orlando, its Top 8 saw six of its players running Izzet Cauldron (though surprisingly, it was beaten out by an emerging Mono-Red strategy)
However, they also read, At the beginning of each combat, until end of turn, each other creature you control gets +1/+1 if it has flying, +1/+1 if it has first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, vigilance, and partner. So were counting all of those in this little roundup, which puts them at the top of this list
For more game coverage, check out roundups of the best alternatives to Warhammer, the best horror board games, and the best Star Wars board games.
I remember Darwin Kastle not trusting me to kill him properly with Mirror Universe in a Vintage tournament
The only downside is that these end at two losses so you have a narrower margin of error