In the best-case scenario, you can Summon 2 Flip Monsters before your opponent's Main Phase since both Princesses' effects do not specify the timing
The bad news is that green has been the worst color in Standard, and there's a lot of random graveyard hate running around, which might make it hard to get full value out of the battle
Promo Info EXTRA BOOSTER CHAIN OF LIBERATION [EX-08] CLOSECLOSE EX8-068 U Option Deep Savers Color Blue Form - Attribute - Type DS DP - Cost 2 Digivolve Cost 1 - Digivolve Cost 2 - Upper Text While you have no face-up security cards, you may ignore this card's color requirements
What they should have really been concerned about is how powerful Emrakul would be if she teamed up with those 15 squirrels, as seen on Emrakul and Chatterfang
and I know you can do it with newly-entered creatures, but then you're still missing out on blockers
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