[fix] Sasaya, Orochi Ascendant check land on bf, not hand

Describe the Bug:
Sasaya, Orochi Ascendant // Sasaya's Essence becomes flip-able (to be a Sasaya's Essence enchantment) based on controller having 7 or more land cards in play.
It should require 7 or more land cards in hand.
Which card behaved improperly?
Sasaya, Orochi Ascendant // Sasaya's Essence
Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink 6-2020 7a084d42a - gauntlet
What exactly should be the correct behavior/interaction?
Land in hand, not on the board.
Are any other cards possibly affected by this bug?
No
Sasaya, Orochi Ascendant // Sasaya's Essence becomes flip-able (to be a Sasaya's Essence enchantment) based on controller having 7 or more land cards in play.
It should require 7 or more land cards in hand.
Which card behaved improperly?
Sasaya, Orochi Ascendant // Sasaya's Essence
Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink 6-2020 7a084d42a - gauntlet
What exactly should be the correct behavior/interaction?
Land in hand, not on the board.
Are any other cards possibly affected by this bug?
No