Jetmir, Nexus of Revels The more creatures you have, the better
Triggering your landfall payoffs not on your turn through Terrain Generator
Even if your opponent removes this, countering the ability of a permanent often does enough: Imagine catching the enters ability of Portal to Phyrexia, or a planeswalker ultimate
For example, a deck can play many Blood Artist lookalikes, many Persist creatures, multiple ways to generate +1/+1 counters on them as they ETB and of course many sacrifice outlets
You can't self-exile, and you need five targets, it doesn't say, "up to five." But you should be able to at least recur it once, if not more, over the course of the game
Lizard, Connor's Curse Lizard, Connor's Curse isn't quite the menace that Oko was, thankfully, but it does give Green something it has sorely missed for years