This is because his design takes up much of the cards art while also having that perfect color coordination
Its a huge tempo swing, is one of the best cards to reanimate or otherwise cheat into play, and works overtime in some of the more popular decks of recent times, like Isshin, Two Heavens as One
20/25 Dialga
A quick look at EDHrec shows us that mono-white and mono-black have a high number of life gain decks, but mono-green doesnt crack 1000
Jeska, Thrice Reborn, Kediss, Emberclaw Familiar, and classic Temur Battle Rage are all perfect examples of cards that will help you take down an opponent
Toxicrene Toxicrene is a clever method of shutting off some of the formats best lands, like Cabal Coffers, Maze of Ith, and Nykthos, Shrine to Nyx