The ETB is a fairly specific graveyard hate, but its a good rate, even on hard cast
An opposing player with a Steel deck could shut Lilo down with a Fire the Cannons
You can do this to draw a card after your mana is set or in response to the massive recursion and graveyard (ab)use at the Commander table
Snapcaster Mage Creeping Tar Pit Abrupt Decay Cryptic Command Damnation Maelstrom Pulse Serum Visions Spellskite Fulminator Mage Sower of Temptation Vendilion Clique Splinter Twin Remand Blood Moon Crucible of Worlds Aven Mindcensor Dark Confidant Liliana of the Veil Vedalken Shackles Bitterblossom Leyline of Sanctity Thats twenty-one viable reprint targets, twenty-five if you consider the entire cycle of Worldwake manlands
So, as long as youve already got a counter on something, you can get more
A quick honesty note on Wick, the Whorled Mind: data aggregators list Wick as the single most-played commander under the Rats tag, which makes it look like the default pick