Offering

Offering is a Skill card for the Ironclad. It grants 2 Energy and 3 card draws, in return for 6 HP. As a Rare card, it can be obtained after defeating a Boss.
Upgrading Offering increases the number of cards drawn from 3 to 5.
=== Strategy ===
* Offering causes HP loss, not damage, and is not reduced by . The life loss downside is mitigated by the Ironclad's .
* The life-loss effect will trigger , adding an additional draw.
*Offering can also trigger for gain.
* Offering is exceptionally strong in decks loaded with one- and zero-cost Attacks. In particular, loads your deck with free Attacks, and recovers the HP loss. Adding a stacks up lots of bonus area-of-effect damage. 
* Combining Offering with massively increases both of their strength. The Top provides extra cards to spend surplus Energy from Offering, prolonging the chain of free draws. With a few shuffled into the deck, a few , and a few points of , turns with hundreds of damage can be executed pretty reliably.
* Offering also provides the Energy needed to execute expensive combos like + 2 + .
* While the life loss is a relevant cost, the player should consider that enemies attack most turns. Unless the deck is extremely defensive, ending the combat a turn or two earlier could easily prevent six or more damage.
* Many enemies, particularly bosses, use weak attacks and Debuffs for a few turns before executing an overwhelmingly strong finishing move. Offering enables the player to beat the clock and slay the foe before it can perform the coup de grace.
==Update History==
*Patch V1.1: The Dealer
**Offering card is now faster in Fast Mode.
*Weekly Patch 46: Adrenaline
**Adding VFX for Offering card.
*Weekly Patch 37: Darkness
**Offering card nerf: HP Loss increased from 5 -> 6.
*Weekly Patch 34: Malaise
**Offering card nerf: Self damage increased from 4 -> 5.
*Weekly Patch 31: Custom Mode
**Optional UPGRADE_DESCRIPTION added for Pummel, Heavy Blade, Offering, and Reprogram
*Weekly Patch 27: Hello World
**Fixed issue where playing cost X cards quickly after energy gain cards failed. Offering -> Whirlwind
*Weekly Patch 6: We're Back!
**Offering card gets a minor change. HP Loss is now 4. Card draw upgrades from 3 -> 5.