Volt Charge is expensive for its removal potential, yet we include it because of the proliferate synergy with experience counters
The flexibility to hit many types of permanents extends the usefulness of the aura to Pioneer and Duel Commander
Furthermore, a lot of the fan creations surpass the quality that is offered by Nintendo and show unique ideas that the company wouldnt normally tackle
Speaking of Palinchron, its also very easy for a mono-blue deck to find ways to go infinite with its mana, which can translate to infinite blink effects, card draw, tapping down all your opponents creatures with Thassa, and other extremely convenient side benefits that can set you up to win the game
The general claim is that running the extra card reduces your chances of drawing specific, important cards in your deck, and therefore is bad for your overall results
This makes cards like Solemnity or an opponent's Vorinclex, Monstrous Raider the worst enemy of a deck that runs a lot of Sagas