Primordial is capable of killing three permanents, and finding you forests, but its not problematic until you flicker/reanimate/etc and isnt that every damn card in Commander
Combat damage triggers offer plenty of possibilities as well, starting with Guildpact Informant and Thrummingbird to help grow our creatures
The emblem that we get means that we can play whatever cards are exiled by Tibalt even after it's gone
Captain America, First Avenger benefits from artifact cost reducers, artifact tutors, and extra combats alike, and its a 3-mana 4/4 with all this value
The changeover was done in part to encourage playing with the Un -cards outside of the vacuum-sealed environment of an only silver-border format
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