attach that "Zoodiac" monster to that Xyz Monster as Xyz Material
Of course, some people are suspicious of gifts, so this deck must contain a few things to make attacking its pilot difficult
The thing is that Vengevine was supposed to be really good against the small white creature deck with a bunch of planeswalkers
If the ability is countered, the permanent will stay on the battlefield and the delayed triggered ability won't trigger again
In addition, Lancea effect only affects the opponent during their turn and therefore can not be used when any effect activates during the owner's turn
There's just so much going on at one time in these duels that it's maddening to keep up with, as monsters are summoned, spells are cast and traps are set then fusion monsters show up, but are countered by synchro monsters (which are different than fusions, of course) and so on and so forth until you're just left with a headache