Your opponents have a bit more agency over how big Leela gets, though
This June, the card game istrying its most ambitious plan yet: collaborating with Square Enix to release a set of cards starring characters, locations and creatures from Final Fantasy history
In real Magic theres an immediate penalty to six cards, though in Duels of the Planeswalkers, gamers are given a freebie (which is not uncommon as house rules in many establishments)
Combining this with the MTR's mention that drawing a card is a meaningful change, I think we can reasonably extrapolate this to any game variable changing, so a player gaining life or adding mana to their mana pool would also be a relevant change as long as the new value is likely to matter
But if youre brand-new to Magic , like many readers of this column, your main concern is how the companion mechanic even works
Blocking creatures commanded by this card is already a losing proposition, and few commanders give you a better incentive to play with -1/-1 counters or toughness-based removal like Last Gasp