Frog of the Rule

Hexproof
When Frog of the Rule enters the battlefield,
create a 0/1 blue frog creature token.
Creatures you control have "Exploit: draw X cards,
then discard X+1 cards, where X is this creature's
toughness"
Each artifact, creature, and planeswalker card you
own that isn't on the battlefield has madness.The madness cost is equal to its mana cost.
Delirium: when you discard a card with madness,
it gains delve until end of turn.