Anytime another creature comes into play, you get to pick between adding three green mana, placing a +1/+1 counter on all creatures you control, or perhaps most importantly, scrying 2 and then drawing a card
Note: Ive left aside Unfinity attractions or Water Gun Balloon Game for mildly obvious reasons, as well as Path to the World Tree and Bear's Companion because you cant play them in a bear typal Commander deck unless you run Morophon, the Boundless
(Damage is dealt to you in the form of poison counters.) Phyrexian Unlife won't affect damage that reduces your life total from a positive number to 0 or less
Few creatures can profitably tangle with the Zombie Fish, and even when it dies it will almost always be in two-for-one exchanges
It gets some value from your opponents, and sometimes youll get a win with its upkeep trigger