Second Wind Card

Fully Upgraded Second Wind Card

Second Wind Card Revives the tower after taking lethal damage and giving invincibility for a period of time.

Use

Upon taking fatal damage card will revive the tower with half health and will add an invincible shield for up to 40 seconds depending on the level of the card.

With Lab research it can also clear up to 100% of enemies on the screen after triggering and with the recharge research can be used more per once during the round (with maximum research 400 waves cooldown).

The Second Wind Card is one of 3 abilities that automatically prevent death. Each work together by activating in a specific order. In case of the fatal damage game will go through them in the following order:

1. Death Defy: Triggers first. If activated none of the next abilities will activate since the tower does not take damage.
2. Energy Shield: If Death Defy fails and an Energy Shield charge is available, Second Wind will not activate because no damage is taken.
3. Second Wind: If Death Defy fails and Energy Shield does not have a charge, Second wind will activate.

Second Wind Upgrades

Second Wind increases the Invincible Shield duration as it gains additional star on the upgrade.

Second Wind Card Star level upgrades

Star Level	Invincibility duration
1	10 sec
2	15 sec
3	20 sec
4	25 sec
5	30 sec
6	35 sec
7	40 sec

Second Wind Mastery

Unlocks a lingering health regen buff when activated which lasts for 400 waves, and unlocks Angel Wings research.

Unlock Cost: 1000 Stones.

Mastery Ability

Angel Wings Increase lingering Health Regen multiplier: x1.90.

Mastery Research

Increases mastery lingering health regen multiplier.

Lab Card Research Unlocks after activating its mastery. Increases Second Wind's Card Mastery lingering health regen multiplier. Has 9 levels.

Level	Value	Time	Gems	Coins	Total Time	Total Gems	Total Coins
1	2.80	20 days, 20h, 0m, 0s	2.53K	1.10q	20 days, 20h, 0m, 0s	2.53K	1.10q
2	3.70	31 days, 6h, 0m, 0s	3.64K	1.30q	52 days, 2h, 0m, 0s	6.18K	2.40q
3	4.60	41 days, 16h, 0m, 0s	4.42K	2.00q	93 days, 18h, 0m, 0s	10.59K	4.40q
4	5.50	52 days, 2h, 0m, 0s	5.19K	3.40q	145 days, 20h, 0m, 0s	15.78K	7.80q
5	6.40	62 days, 12h, 0m, 0s	5.96K	5.60q	208 days, 8h, 0m, 0s	21.74K	13.40q
6	7.30	72 days, 22h, 0m, 0s	6.73K	7.70q	281 days, 6h, 0m, 0s	28.48K	21.10q
7	8.20	83 days, 8h, 0m, 0s	7.51K	9.10q	364 days, 14h, 0m, 0s	35.98K	30.20q
8	9.10	93 days, 18h, 0m, 0s	8.24K	9.80q	1 years, 93 days, 8h, 0m, 0s	44.22K	40.00q
9	10.00	104 days, 4h, 0m, 0s	8.89K	10.00q	1 years, 197 days, 12h, 0m, 0s	53.11K	50.00q

Lab

Lab Researches that will improve Second Wind

Second Wind Blast

Lab Enemy Research Unlocks at Tier 3 wave 150 Milestone. Second Wind Blast clears a percent of spawned enemies after second wind triggers. Has 4 levels.

Level	Time	Cost	Value
1	1d  3h 46m	1,800,000	25%
2	1d 17h 39m	3,000,000	50%
3	2d  7h 33m	4,500,000	75%
4	3d 11h 19m	75,000,000	100%

Recharge Second Wind

Lab Card Research Unlocks at Tier 14 wave 60 Milestone. Allows Second Wind to recharge a number of waves after activating. Has 7 levels.

Level	Time	Cost	Value
1	5d  4h  59m	550,000,000,000	2,000
2	6d  14h  21m	1,050,000,000,000	1,500
3	8d  54m  39s	1,550,000,000,000	1,250
4	9d  23h  10m	2,050,000,000,000	1,000
5	14d  1h  58m	2,560,000,000,000	750
6	24d  19h  29m	3,070,000,000,000	550
7	51d  8h  11m	3,600,000,000,000	400

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