one piece card game booster pack The Azure Sea's Seven Japanese such as Mihawk from OP The Best Premium Booster Pack

Since Glenn only has one power and skulk, it can only be blocked by creatures with one or less power, which often allows you to cards when you connect to an opponent

I can't find the guidelines for card alters that Wizards puts out (if there are any)

Whiplash Trap and Lethargy Trap accomplish some of the same things youre looking for from the Claws and Droplets, while also being better mid-game topdecks

Void triggers as battlefields get emptier, or whenever a spell is warped away at lightspeed

That could be an Elesh Norn, Grand Cenobite or Avacyn, Angel of Hope you're popping into play for the low price of 3 mana and bouncing a tapped creature back to your hand, which is possibly additional upside with the right ETB creatures