({6} magic symbol) ({W} magic symbol) plus enougb mana to animate the land (if needed) available.
Steps
If needed, animate the land, causing it to become a creature.
Cast
Sunbond by paying its mana cost, attaching it to the animated land.
Activate
Black Panther by paying ({3} magic symbol) , moving all +1/+1 counters from the animated land to Workhorse, then causing you to gain at least 2 life and draw a card.
The animated land triggers, putting at least two +1/+1 counters on it.
Activate Workhorse twice by removing two +1/+1 counters from it, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) that can only be spent to activate abilities.
Repeat from step 3.
Results
Infinite card draw.
Near-infinite +1/+1 counters.
Near-infinite lifegain.
Near-infinite lifegain triggers.
Infinite draw triggers.
Near-infinite colorless mana that can only be spent to activate abilities.