Likewise, it also works really well in counters decks (like my Hamza, Guardian of Arashin deck), as the cost to prevent your draw will increase as Esper Sentinel gets bigger and bigger, easily making it more costly to pay for than even Rhystic Study
You'll have the Magic cops on your back, and those guys don't mess about
Sure, there are other moist creature types out there, but Merfolk are pretty consistently hard to deal with and incredibly powerful, and what more can you really ask for from a bunch of Creatures that like chilling out on river beds and stuff
Many have tried to mimic the Pod, but few have been successful
If you have a combo, look for a time to execute it when the potential for interruption is low to nonexistent