Cutting it from a competitive deck and trying to swap in something else would almost never be recommended because the card is too important to the deck's overall strategy
Demonic tutor kind of defeats the purpose of a restricted list if you can just tutor the restricted card
Currently, there are only two remaining types that have yet to get their Special Energy treatment (Water and Fire), and while strategies within each type are all over the board, there are at least advantages to playing each type
Description Additional information Description MTG Kithkin Spellduster Eventide Flying , Sacrifice Kithkin Spellduster: Destroy target enchantment
Zapdos and Articuno both have 60 damage attacks that deal 120 damage if they have Team Rocket's energy attached
Lathril, Blade of the Elves allows you to play all the elves printed in black, and is currently one of the most popular commanders in EDH, period