As this creature enters, choose odd or even. (Zero is even.)
This creature has protection from each mana value of the chosen quality.
(17/04/2020)
If Lavabrink Venturer somehow has no choice made for its ability, its last ability grants it no protection abilities.
(17/04/2020)
The mana value of a token that isn't a copy of another object is 0. A token that is a copy of another object has the same mana value as that object.
(17/04/2020)
For spells with in their mana costs, use the value chosen for X to determine the spell's mana value. If a permanent or card in any other zone has in its mana cost, X is considered to be 0.
(17/04/2020)
You choose odd or even for Lavabrink Venturer before it enters the battlefield. There's no point at which players can target it before it has gained the appropriate protection abilities.