pokemon card tierno XY PHANTOM FORCES - 107/119 REV HOLO TRAINER You may play only 1 Supporter card during your turn (before your attack) Tierno (107/119) [XY: Phantom Forces]

This includes spells that target a single creature

And considering just how many of these similar cards were in the early days of the game, Im sure wed all agree that the beginning of Magic leaned heavily on D&D as an inspiration, including the names and concepts of cards

THERE IS NO OFFICIAL RULE THAT DETERMINES WHAT THIS CARD IS

The conditions are that you need a chunky creature and that youre hitting a smaller one, but thats not hard for Gruul particularly with so many cheap and pivotal creatures being deployed to curve out

Its not difficult to get out with the amount of quality ramp well have in Standard, and once you do theres not much your opponent can do about it