I'm a bit new to MTG to forgive me on this, but is it true that once Master of Waves leaves the field, the tokens it summoned leave as well? I'm used to YGO where this isn't a thing and I'm kind of confused on how the rulings on tokens work. If anyone can chime in on this that'd be great.
Also if a card like Master of Waves gets responded to by a removal spell, it doesn't summon tokens? I'm used to in YGO where it doesn't matter if a monster gets responded to in a trap card, that as long as said monster fulfills certain conditions (like "summoned" for example) it could trigger it's effect, unless the summon itself was negated.
Example:
Master of Waves has an enters the battlefield effect of creating a certain number of token creatures:
If someone counters the spell that would cause Master of Waves to enter the battlefield, the tokens will not be created because Master of Waves never enters the battlefield since the spell creating it never resolved.
If you successfully cast Master of Waves, the "enters the battlefield" effect is put onto to the stack. If your opponent responds to putting the ability on the stack by putting a removal spell on the stack (say, Doom Blade), and then you don't do anything, the spells resolve from the "top" of the stack to the bottom (think of it like a literal stack of cards). Doom Blade resolves which will kill Master of Waves, and then Master of Waves trigger will create tokens.
The tokens die, but this is simply because they are 1/0 tokens and ANY creature, regardless of being a card or a token, dies when it has 0 toughness. The reason they stay alive when Master of Waves is out is because he has a static ability giving them +1/+1 so they have enough toughness to not die.
If you had another effect which gave the tokens more than 0 toughness (like another Master of Waves already on the battlefield), they wouldn't die just because the Master of Waves that created them died.
Oh I get it now. So pretty much whenever any creature gets 0 defense it dies automatically? I know this works for removal spells, but I never quite got it as I assumed when the tokens entered the battlefield they were 1/0 for a brief moment before becoming 2/1.
The reason why I asked cause I saw a video where someone used Detention Sphere on it, which caused the tokens to disappear. Then when Detention Sphere left the field and Master of Waves come back, he summoned more tokens. Now I'm starting to get it quite more.
And yeah I figured only negating the actual spell would do something like that, but I suppose my confusion lies in how the tokens basically die automatically unless something can boost their attack.
The vast majority of token creatures have more than 0 toughness (defense) on their own and don't die unless something kills them. That's actually something that is specific to Master of Waves. If you look at, say, Raise the Alarm, you see that the tokens stay alive on their own just fine:
Also, an effect that occurs when something "enters the battlefield" doesn't care how it entered. It just cares that it does.