While in theory this can cause you to lose the game (as you saw in my match against Merfolk), the truth is it can almost always be played around, unless you run into the very rare situation where you have only the second Part the Waterveil left in hand and nothing to buy another turn, whether real or virtual
It floats on water with its head out
What makes a card a must-have in my collection comes down to nostalgia, art quality, and scarcity
Theres the grotesque Carrion Feeder, the somewhat more polite Viscera Seer, and the very handy Dimir House Guard
If you gain control of a permanent "until end of turn," that effect will wear off during the cleanup step, after the end step
Ivora, Insatiable Heir starts off weak but has the potential to grow very quickly, adding a +1/+1 counter whenever we discard a card