Lim-Dûl's Paladin's Trigger(s)

[Mr. Fantastic]

I have always interpreted this card to trigger multiple times if there are multiple blockers, similar to Bushido or Rampage.  I.e., if I attack with my paladin and my opponent blocks with 4 creatures, does it get +24/+12 until end of turn?

Also, will my opponent need to cast Stifle 4 separate times in order to prevent any bonuses?

Just double checking.

[Yare]

509.4c An ability that reads “Whenever [this creature] becomes blocked, . . .” generally triggers only once each combat for that creature, even if it’s blocked by multiple creatures. It will trigger if that creature becomes blocked by at least one creature declared as a blocker. It will also trigger if that creature becomes blocked by an effect or by a creature that’s put onto the battlefield as a blocker, , but only if the attacking creature was an unblocked creature at that time. (See rule 509.1h.)

So, it will only trigger once, regardless of how many creatures it is blocked by. This means your opponent only needs 1 Stifle.

[Mr. Fantastic]

Hmmm, I guess I have had Bushido all wrong as well then.  Good thing I asked!  Thanks.

[Gabethebabe]

509.4d An ability that reads “Whenever [this creature] becomes blocked by a creature, . . .” triggers once for each creature that blocks the named creature. It will also trigger if an effect causes a creature to block the attacking creature, even if it had already been blocked that combat. It won’t trigger if the creature becomes blocked by an effect rather than a creature.

Watch out and see the difference in wording of both abilities.

Lim-Dûl's Paladin
Creature — Human Knight (0/3)
Trample
At the beginning of your upkeep, sacrifice Lim-Dûl's Paladin unless you discard a card. If you sacrifice it this way, draw a card.
Whenever Lim-Dûl's Paladin becomes blocked, it gets +6/+3 until end of turn.
Whenever Lim-Dûl's Paladin attacks and isn't blocked, it assigns no combat damage this turn and defending player loses 4 life.

So Lim-Dûl's Paladin´s ability is an effect of the 509.4c type, as indicated by Yare.