Its first effect is a reactive counter-trap style negation specifically against effects chained to yours, which is niche but strong for protecting combo starters from hand traps like Ash Blossom or Infinite Impermanence, while its GY effect rewards Tribute-based lines (including its own Tribute cost) by floating into a Stardust Synchro, maintaining pressure
And they're doing a pretty good job
If you love Mega Dragonite, then there likely won't be many better cards to celebrate your appreciation for this Dragon-type Pokemon, and the English version is certain to cost much more than this
Remember, were not including hidden information here, so instants and flash creatures dont count
Although it is limited to monster effects, it is completely resistant, so it is quite good to have a place