Thijarian Witness This ones kind of sneakyThijarian Witness has flash, so you can drop it in mid-combat or right before something dies
deck.): If your opponent has 5 or more DON
Unleash the pain!") When Yubel activates either of that monster's effects, she announces "Yubel - Terror Incarnate's effect activates!" (spoken as "Terror Incarnate's effect activates!") When Yubel Summons "Yubel - The Ultimate Nightmare", a cut-in frame of Yubel briefly appears, and she announces "When Yubel - Terror Incarnate leaves this dimension, a stronger form descends.", followed by "Yubel - The Ultimate Nightmare is upon you!", then followed by "In my ultimate form, I cannot be destroyed in battle!" Most of the time when Yubel attacks with that monster, she announces "The Ultimate Nightmare attacks!" (spoken as "Yubel - The Ultimate Nightmare attacks!"), followed by "Prepare for an endless, restless sleep!" When Yubel activates that monster's effect, she announces "Yubel - The Ultimate Nightmare's effect activates!" (spoken as "The Ultimate Nightmare's effect activates!")
This can easily end games if it's allowed to resolve, which you definitely shouldn't allow to happen
You are not required to do so, though, as there can be advantages to leaving it in its new zone, such as reanimating it from the graveyard or blinking it from exile without having to pay Commander Tax
It has a very solid attack in the form of Hydro Kick , dealing 140 damage for 3 Energy, but only 1 of those Energy needs to be Water