Pokemon Go's first Gen 4 Legendary Pokemon, Giratina, is making an encore appearance in the hit mobile game soon. Niantic is bringing the Renegade Pokemon back to Raid Battles for another month beginning March 28, and this time around it'll appear in a different form.
From March 28 to April 2, players will have another opportunity to capture Giratina in its Altered Forme (pictured below). After that, the Legendary Pokemon will transform into its Origin Forme--the serpent-like appearance it takes in Pokemon Platinum--until it leaves Raid Battles on April 29.
Regardless of what form it takes, Giratina is a dual Ghost/Dragon Pokemon, so the same strategies you used to battle it when it first appeared during last year's Halloween event will apply. What's unique about this combination is that both Ghost and Dragon are susceptible to their own types, so Pokemon like Salamence, Rayquaza, and Gengar will prove to be effective against Giratina. Dark-types such as Tyranitar and Houndoom will also have an edge over it.
In the meantime, you still have a few more days to capture Pokemon Go's current Legendary, Dialga. The Temporal Pokemon will only appear in Raid Battles until March 28, meaning this is your last opportunity to add it to your collection before it leaves the game. Dialga is a dual Dragon/Steel-type, making it weak to Fighting and Ground Pokemon like Machamp and Groudon.
Pokemon Go is in the midst of its spring equinox event, which makes Grass Pokemon like Oddish and Sunkern easier to find. The game's next Community Day takes place this Saturday, March 23, and it likewise features a Grass Pokemon: the Gen 3 starter Treecko.