cards like exploration mtg (retro)- Artist Proof Station (Tap another creature you control Similar cards : r/magicTCG

One weakness is that it does not remove the cards

Paying 2 generic mana to draw one card isnt going to feel amazing, but things very quickly snowball from there

The stats aren't worth the cost, but its enter-the-battlefield ability is a game ender: all creatures you control gain trample and +X/+X until end of turn, where X is the number of creatures you control

You also get lots of value from creating 4/4s with cards like Elemental Bond and Garruk's Uprising hanging around

Additionally, you can run other prison effects like Sphere of Safety and Ghostly Prison and cards that reward you for gaining life like Vito, Thorn of the Dusk Rose