Scion of the Ur-Dragon is also the best Dragon commander, because it can be any Dragon in your deck, and you can very easily kill off your opponents in a single attack from this shapeshifting beast of a Creature
this could be from cards like Toothy, Imaginary Friend and Kianne, Corrupted Memory that grow whenever you draw cards or from those like Psychosis Crawler and Tishana, Voice of Thunder whose power and toughness are equal to the number of cards in your hand
You won't put counters on anything
However, The Seedcore does have one big issue that might make it hard to play more than one copy in an Infect deck: it doesnt make colored mana for spells
MTG's last Standard set to focus on color shards was Streets of New Capenna
The expressions of the cannibals are particularly interesting: some look on with cold, inhuman indifference, while others seem to be experiencing their own horror at what they have become