The latest card being suspended is DJ, and the design team says that DJs ability to permanently steal resources with such ease was simply not an intended use of his mechanic. They didnt want to errata the card either, but because he can have such a major impact on the playstyle of opponents trying to get rid of him quickly, it was decided to remove him from the game
But I understand how the concept of "sowing with salt" may not fit the Zendikar theme
Cacophodon provides a nice crossover with the red pingers and both play well with mini-wildfire style effects that benefit from big mana, with X-spells that distribute damage (Rolling Thunder) becoming possibly very powerful with the other enrage creatures
Prismatic Lace covers all five of the other Laces as far as changing the color of a permanent goes
Is Snapshot's card maker online available to customers outside the USA
This is why lands which enter tapped are written with a replacement effect instead of a triggered ability: if they came in untapped and then became tapped a moment later due to a trigger, there would still be a window where players could tap them from mana and negate this drawback