A Link Monster's Link Number can be found next to its ATK, in place of the DEF on other types of Monster Cards
Most of these can be completed by accident while playing, but if you're desperate for some items, this is a great way to earn them
Gladiator Beast Torax X WATER Level 3 [ Fish / Effect ] ATK 1400 DEF 400 If this card was Special Summoned by the effect of a "Gladiator Beast" monster, at the end of any Battle Phase that this card attacked or was attacked, you can return it to the Deck to draw 1 card
Those wont be as relevant to us, but as well discuss, if a foil hits it big (Expressive Iteration, Im looking at you!) suddenly thats a very relevant number
fist hook By discarding it from your hand without having to place it in the play area, you can immediately use the function from your hand as a one-time use like an event