Clash(激突), Rage in English is a special ability of Red spirits. Spirits with this effect have the following text:
- Clash (When Attacks) Opposing Spirits must, if possible, block.
Previously, the effect read as:
- Clash (When Attacks) Your opponent must block if possible.
The reason behind this change being to make clear that the effect targets opposing Spirits, not the opponent.
This allows Red to demolish an opponent's field, and is especially deadly combined with the green nexus, The Anthill. Examples of cards with this ability are The ThunderEmperorDragon Siegwurm and The FuryRockWyvern Dragorock.
Also, some spirits have similar effect, such as they can target attack opposing spirits when they attack. An example of a spirit that have this effect is the The SunDragonDeity Rising-Apollodragon.