lucario pokemon card full art [M1L] Mega ex 078/063〈SR〉 (You cant use more than 1 GX attack in a game.) Weakness Psychic ×2 Resistance None None Retreat Cost Pokemon - Mega Lucario ex

You might be facing off against a planeswalker you have played with and against loads yet have never seen the ultimate in action

One of the 10 Special Guests cards in non-foil replaces a common in 1 in 64 Play Boosters

Ba Sing Se, allows you to earthbend 2 every turn, so even if your opponent answers your creature lands, they return to the battlefield tapped instead of going to the graveyard

There are also some effects like this that are specific to dinosaurs, like the saga on the backside of Huatli, Poet of Unity

So it's not that unbalanced in my experience, but the opportunity to draft a dud deck is greater than most other Standard sets