Wilds of Eldraine [Best for Casual Fun] Wilds of Eldraine returns players to one of Magics most imaginative planes with fairy tale inspired characters and mechanics
Similarly, an ability of another card that instructs you to "transform" one of these cards will cause you to convert it, even if that ability doesn't use the word "convert." More Than Meets the Eye notes: "More Than Meets the Eye [cost]" means "You may cast this card converted by paying [cost] rather than its mana cost." It functions in any zone from which the spell can be cast
Gaea's Blessing : Whenever a spell you play is countered, draw a card
Runic Armasaur in general seems to have a low ceiling into certain decks, holding it back a bit
Another option, if you want a two card combo, and prefer mana to damage, is the sorcery spell Chain Lightning
This card has dozens of printings, is included in most Commander decks, and is widely regarded as one of the most iconic cards in the format