mtg converge cards MTGNexus Slobad, Suntouched (Converge/Sunburst Commander) :

The +2 gives us another way to stock our graveyard and also trigger Monument to Endurance, while the ultimate is actually pretty achievable and deals a ton of damage by essentially casting a Lightning Bolt whenever an artifact enters the battlefield

These enable many of the other powerful decks as well

6 - City Pigeon Often treated poorly, pigeons are actually smart, loving creatures who humans abandoned after they were no longer needed

It does appear in sideboards of some Modern decks and there was a nice delve-based deck with it and Card not found at its center

Although it wasnt particularly widely played, Celestial Dawn and others like Harvest Mage are examples of the holes we closed