Sojourner's Enforcermite is a common Artifact Creature — Frog Myr Salamander card from Unknown Event (UNK), collector number CA06b. Current market price: $39.99, TCGplayer market prices via Scryfall.
Affinity for Affinity (This card costs {1} less to cast for each permanent you control with affinity.) Affinitycycling {2} ({2}, Discard this card: Search your library for a card with affinity, reveal it, put it into your hand, then shuffle.)