cat dog deck mtg commander Tech - Rin and Seri, Inseparable What cards to add to

You may choose to target a creature that has mana value greater than 3 even if no player has three of more poison counters

Theres also no getting around the fact that Happy as a Clam has very little ways to be cheated out since he doesnt come with a shift line

I would protect it, and keep it running for a few turns

never bad, steady source of card advantage, with the flexibility of occasionally doubling as a win condition in Tokens decks (Purphoros, God of the Forge)

it was just flipped over

In addition to winning games out of nowhere, the threat of the combo is important in a deck like this because it forces your opponent to respect it and play more conservatively than they otherwise would