If it is sent by an effect, it will be activated no matter where it is sent, so even if this Xyz material falls, the effect can be used
To me, these are the main reasons why sacrifice decks tend to so easily stumble into infinite combos
Umbreon Ex specifications: Pros An extremely popular Pokmon Plenty of sentimental and financial value Cons Not the best art of Umbreon Umbreon cards are always highly sought after, likely due to how beloved the Pokmon is
This Link Summon cannot be negated, also your opponent cannot activate cards or effects when a monster is Link Summoned this way
A popular strategy is to play Plaguecrafter than sacrifice it to its own effect, putting it into your graveyard ready to pull back out
And they are more likely to get damaged