Currently, only two cards have managed to make it past the $100 value, and they are both Greninja ex cards
Cast Glimpse of Nature, cast a bunch of zero drop stuff, cast Thrasta, power out Craterhoof Behemoth, profit
Trickstar Bella Madonna Trickstars are one of the best link summoning decks out there, and somehow they made burn decks fun again
C Common Accel Synchro Stardust Dragon X WIND Level 8 [ DragonSynchroEffect ] ATK 2500 DEF 2000 1 Tuner + 1+ non-Tuner monsters If this card is Synchro Summoned: You can Special Summon 1 Level 2 or lower Tuner from your GY
A 12/12 creature with trample wouldn't be great at 12 mana, but the whole point of Ghalta is that your other creatures reduce her cost
If the creature can't attack any of those players but could otherwise attack, it must attack an opposing planeswalker (controlled by any opponent) or the player that goaded it