You have little in the way of discard synergies to further empower it
Well, there are cards that change this dynamic, either giving you a huge benefit when you discard your own cards or by punishing people for having few or zero cards in hand
Mutate was a mechanic introduced in Magic The Gathering's Ikoria: Lair of Behemoths (though it first appeared on a card in the Unsanctioned set)
Call to the Grave, Barter in Blood, and Grave Pact are all excellent at this, and they all fuel the main man himself
This can lead to a fast start, with a gradual tapering of potential as the game goes on
7 Zoroark (XYBREAKthrough) Zoroark is a pretty great Pokemon, both in the TCG and the video game series, and its XY BREAKthrough card serves as an excellent reminder of this