Raging River
Whenever one or more creatures you control attack, each defending player divides all creatures without flying they control into a "left" pile and a "right" pile. Then, for each attacking creature you control, choose "left" or "right." That creature can't be blocked this combat except by creatures with flying and creatures in a pile with the chosen label.
Enchantment
standard:
not legal
future:
not legal
historic:
not legal
gladiator:
not legal
pioneer:
not legal
explorer:
not legal
modern:
not legal
legacy:
legal
pauper:
not legal
vintage:
legal
penny:
not legal
commander:
legal
oathbreaker:
legal
brawl:
not legal
historicbrawl:
not legal
alchemy:
not legal
paupercommander:
not legal
duel:
legal
oldschool:
legal
premodern:
not legal
predh:
legal
High - Low