Admiral Pebble has carried the same lucky pebble through forty-two naval campaigns and never once lost it (or a sea battle). Polite, patient and quietly ruthless, she plans every move over a cup of kelp tea.
Pebble's naval units hit 30% harder, so don't trade with them head-on. The usual answers are Bomber, Artillery and Rockets.
Pebble's ground units deal 15% less damage, so even trades go your way.
Pebble's air units deal 10% less damage, so even trades go your way.
Pebble's naval units shrug off 17% of incoming damage: focus fire on one at a time.
Pebble's naval units move 1 further than you expect: count their reach before you park next to them.
Finish off Pebble's damaged units before the meter fills: the power heals them back up.
Every hit Pebble's units take fills their power meter, so strike hard in one turn instead of chipping away. When the meter is full, pull fragile units back.