Since Invasion' s creature wars usually began on turn two, you could drop a turn two bear, and then hold back Exclude for anything your opponent might drop
He is slow and vulnerable, generally incurs a tempo loss and is also fairly easy to block
Pro Tour Chicago 2000 featured a lot of Rebels with Armageddon and a lot of R/G Blastoderm decks
With a Spelunking on the battlefield, we can make a bunch of mana with Baldur's Gate, tutor up another copy, legend rule away the tapped one, and make a bunch more mana to have a massive turn where we dump our hand
I dont mind waiting longer to get a steep discount, but thats a personal choice
The kitties version is from four years ago, and this version, while cute, isnt going to make a splash