Since the tribute is also not an activated effect, there is no way to stop it unless your opponent has a card that stops you from Summoning monsters in general
Please consult the following list and also check Regulation marks
Whenever a creature would die, its controller may its mana cost, if that player does, they may return it to their hand as a replacement effect
Roseanne's Backup#172 Holo Roseanne's Backup#172 Holo iWe may earn a commission from qualifying purchases through affiliate links at no extra cost to you
There are only 500 of these, and they have a double rainbow foil treatment
With this, Mathas can incentivize your opponents to use their removal on threats that you want removed, potentially deterring players from using their removal on cards on your creatures, and letting you keep your best cards around a little bit longer