rules of the ec
Select up to 3 cards for sideboard from vault and state them in EC topic in secret section.
G1 must be played with the original deck as it is in the gdoc.
Games 2-5 may use up to 3 of the pre-selected sideboard cards.
The sideboard cards must be from vault.
If used in any game the sideboard cards must be discarded after the match (regardless of win/loss). The sideboard discards do not count towards your 9 cards from vault if the match was lost.
The sideboard cards must be unupgraded, and cannot be pillars/pendulums/mark cards.
rules for sideboard role:
Sideboard of 3 cards - the first game must be played with the full deck. Before each match, you must import the deck from vault tool. After the first game, you may remove (up to) 3 cards after importing. If any of the three cards are upgraded, you may reallocate these upgrades elsewhere in the deck. The deck played should always be at least 50% in-Element, and should always contain at least 4 in-Element upgrades.
there is nothing about keep the deck in-element ratio, there is not nothing that calls to read the sideboard boost for more rules
the deck was legal when i submited it, since rather than sideboard u lost the cards u sideboard, i thought it was normal shift the % of in element card