mtg are landfall decks good

[Treetop]

are landfall decks considered good?

there is no landfall deck in standard. so no. the only deck that comes close is boros bushwacker that plays 8 landfall spells and 12 fetchlands to support them. the 8 landfall card that deck plays are just good weenys to support the red/white weeny with burn strategy of the deck. they are played because they hit hard not because they have landfall (although thier landfall ability (+2/+2 until end of turn) is the reason they can hit so hard).