The second ability reads whenever an artifact an opponent controls is put into a graveyard from the battlefield, Pain Distributor deals 1 damage to that player
If heads, this attack does 10 damage plus 20 more damage
Karametra is an awesome enabler for this color as well as the final threat to swing and help bring your foes down
Clambassadors is another rather simple pun, but the flavour isn't the most interesting
Cards with Escalate have multiple modal effects, one of these effects is activated when the card is played, and additional effects can be activated by paying an increased cost
The ability to both draw a card when your stuff is targeted (and before resolution, so you can draw a card to respond to it) and to keep your foes from drawing more than one is very powerful for a 4/4 3-drop that gives you ramp, removal, and countering