Danger! Tsuchinoko?

Protection from everything,indestructible,Evolve
Danger{3}(You can reveal this card in your hand; your opponent chooses 1 card from your entire hand at random, then you discard the chosen card. if the discarded card was not Danger! Tsuchinoko?, you may sacrifice a permanent you control then cast Danger! Tsuchinoko? without paying its mana cost, and if you do, draw a card.)
If Danger! Tsuchinoko? is discarded:you may sacrifice a permanent you control then cast Danger! Tsuchinoko? without paying