A traditional foil basic land replaces the basic land in 20% of Set Boosters, and a foil-stamped signature art card replaces the art card in 10% of ONE Set Boosters
As with anything in life, practice makes perfect, so I encourage you to get in some games and test your plans and assumptions
Needs a creature to target- This will obviously limit the impact of Maps in a deck with low creature count
It's a little slow, but crewing Esika's Chariot to put Parhelion II or Can't Stay Away into the graveyard might be useful
If you play Knight of the White Orchid and meet the conditions to grab a land from your library, your targets should be either of the dual lands with types
Life-gain in multiplayer often consists of cards like Congregate, Angelic Chorus, Invincible Hymn, Kokusho, the Evening Star, and other similarly disgusting cards