A lot of decks want this kind of effect and Farseek does it as well as it needs to and does have some nice perks about it
If there is one tribe where I am willing to separate my expectations of any future developments of it from the dozen cards we have thus far, Ninjas would be it
You can do it in response to being attacked, kicking the attacker out of the game for a bit, or you can use it to reset any enter the battlefield effects you might have
Most likely, Jester's Mask's user will choose a new hand of unneeded lands and/or weak spells for the opponent, which can set them very far behind
In a format where every point of damage matters, forcing a control player to shock themselves just to target your creature with a Go for the Throat is devastating
Remove a +1/+1 counter from Crystalline Crawler: Add one mana of any color to your mana pool