meta, where Special Summons are the norm, Lost Wind is a rather valuable card specifically designed to halt their progress
Its attack, Onyx, is unlike anything weve really seen before and lets you discard all Energy attached to Umbreon ex to straight up take an opponents Prize card
While their other effects are powerful, the fact that they can be used on the opponent's graveyard means they're great for disruption
As for where Jaden stands in the competitive circuit, not all of his Elemental Heroes are used in competitive Elemental Hero decks
Ill post pics when I get some in but it should be awhile and it will be a pain to find a full set for sure
As well as exiling opponents cards before they can hit the grave, Dauthi Voidwalker is an unblockable source of damage that can steal opponents best plays and put them to work for you instead