Limited 1 per customer, any attempts to bypass this limit will have your order canceled and refunded without notice
The most commonly banned type of card are ones that can be cast for free
Despite this, we still are yet to see that name used in the actual rules text of cards, probably because there is no one consistent way that these cards have been worded
While the "ease of flipping" category is, in large part, a product of the number of defense counters on the battle (battles range from three to seven defense counters, and a battle with three defense counters will be much easier to flip than one with seven), it also takes other factors into consideration, like whether the battle makes creatures (if so, we can use them to help defeat the battle, making it easier to flip) or whether the battle acts as removal (which can get a blocker out of the way, making it easier to attack and defeat the battle)
We now have a back-up Worm Harvest in Lluwen, Imperfect Naturalist, which staples the effect to an activated ability
In this respect it leaves plenty of scope to make the deck your own, which is not a bad thing necessarily