Your idea is ineffective compared to the two main ideas of more or less purely stalling rainbows. Firstly, you could look up the infamous Mr Sexington's Rage Quit deck. Secondly, you can look up a more normal aflatoxin rainbow, still with otys, and usually carrying a jade shield and permafrost shield.
When you carry aflatoxin, you should always exploit it twofold, both casting it on your own RoLs (or any substitute cheap creature) and your opponent's creatures to flood both sides of the board. From there, the win is secured either through a gradual accumulation of damage or via deckout.
