mtg proxy card size Day's Undoing - Magic Origins exile target instant or sorcery card with mana value less than or equal to Arcane Proxys power from your graveyard The Complete Guide to MTG

Path of the Pyromancer Dont let the weird Planechase text distract you, Path of the Pyromancer really slaps

By using Pippins first activated to trigger Merrys, you can build up a decent token force that you can later buff with Pippin

Obviously, if a card says to flip a coin, you flip a coin, but otherwise, it just needs to be an agreed-upon process with an equal chance of getting each result

It is not the most aggressive of dorks but it is still fine for getting some beat on with and like Rakdos Charm will not overly pollute the consistency of what you are trying to do

This puts every non-Goblin slot in your deck under serious scrutiny: every time you reveal a non-Goblin, it's just throwing away a potential free card

Condescend Among the counterspells that let you invest mana in them like Logic Knot, Condescend is one that I like as it lets you scry upon resolution