Alien Salamander is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Islandwalk

How it works : Alien Salamander

Original English text — Wizards of the Coast / Scryfall

No additional ruling has been published for this card.

Interactions with other cards

These cards' text mentions Alien Salamander.

The Sea Devils

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Create a 2/2 green Alien Salamander creature token with islandwalk. (It can't be blocked as long as defending player controls an Island.) III — Until end of turn, whenever a Salamander deals combat damage to a player, it deals that much damage to target creature that player controls.