As an example, I run Sundial in my Valduk, Keeper of the Flame deck along with Final Fortune and Glorious End
Ive also been trying to put together a Pauper madness deck playing Hell Mongrel alongside the card it is a callback to: Wild Mongrel
It's worth noting that generic ETB doublers like Starfield VocalistStarfield Vocalist and PanharmoniconPanharmonicon will double the discovery triggers, but creature type-dependent doublers, like Katara and Roaming ThroneRoaming Throne, will not
Scar, Vengeful Lion will help with card draw, as every time you challenge an already damaged character, you can take the top card of your deck and tuck it safely into your hand
As a piece for Superfriends decks, Im quite impressed
These cards easily turn into more cards, and more cards means more resources to use to further your game plan