Making a Frog mostly unblockable might not help Kenrith, but if I've got Yargle and Multani, or just Yargle, Glutton of Urborg, in play, I will be well positioned to put some pressure on a tablemate's life total
These have all held their price points fairly well given their relevance in Standard and Commander--they come into play untapped and are fairly easy to "turn on" so that they can tap for both colors of mana
There are some pretty chonky flyers in the decks too, with Brainstealer Dragon being at once a great card for the exile-and-play-opponents-cards archetypes, but also a great fit for reanimator decks that want to steal other players stuff
Ancient Tomb Ancient Tomb is a land that acts like a spell
The reward of searching for any card in the game is unprecedented, even if it cannot be activated during the same turn
Stick in a binder or box and enjoy at your leisure