From the leaks so far, Boost looks like its related to the Shift ability
Living Energy Review Living Energy is the third energy deck set to be released in less than a year, but it is the first of those in Temur (green/blue/red) colors
(If they're equipped to the same creature, the abilities of the equipped creature will also trigger three times.) An ability of the equipped creature that triggers when a card is put into a graveyard "from anywhere" triggers twice only if (a) a creature card was put into a graveyard from the battlefield and (b) The Masamune is still on the battlefield and attached to the creature with the relevant ability
Unfortunately, this EX has turned out to be a dud, relying on losing half of its HP or less to really matter
Source: Price Charting (1, 2, 3, 4, 5, 6, 7, 8, 9, 10), PSA The Pokmon Trading Card Game is a strategic card game where players build decks of Pokmon, Trainer, and Energy cards