Eternatus

Competitive Strategy

Eternatus is a Poison/Dragon legendary with special pressure with Poison/Dragon typing. Poison/Dragon STAB lets it pressure Fairy, Grass, and Dragon targets. Its role depends on the format, but the type-chart job is clear: use its useful resistances, immunities, or offensive pressure to force the opponent into predictable answers rather than treating it as a generic switch-in. Stats, ability choice, and legal moves still decide how aggressively it can be positioned. The weakness profile is the central part of the page: Eternatus is 2× weak to Ice, Ground, Psychic, and Dragon. Eternatus has no type immunity. These numbers come from the standard type chart for Poison/Dragon, so ability effects, field effects, Terastallization, or format-specific rules can change an individual turn without changing the baseline matchup. Do not leave Eternatus in front of a super-effective attacker just because it has a useful offensive move in return. To use Eternatus well, bring it in through a resisted move, a pivot, a forced switch, or a revenge-kill window rather than repeated raw entries. It appreciates teammates that cover Ice, Ground, Psychic, and Dragon pressure and create safe entries. To counter Eternatus, preserve Ice-type attackers, Ground-type attackers, Psychic-type attackers, and Dragon-type attackers and pressure it before it can turn its matchup into momentum. Use the type chart first, then account for speed, bulk, ability, recovery, and revealed coverage before committing to the exchange.