Tiarella cordifolia
A quick-opening groundcover that plays either role but hits softly, healing and poisoning to stretch fights out.
Foamflower is a low groundcover Perennial herb that fights as a quick-opening, self-healing skirmisher. It is native to Eastern North America and invasive in Europe, so the arena can cast it either way — as a native buffer for your bench or as an invasive attacker. It is a weak hitter: its damage is low in both roles, so it leans on a fast start, poison, and healing rather than on raw offense. See nativity.
Its starter attack, Taproot Anchor, unlocks at level 1 and costs 2 Sun, dealing about 27 damage native / 27 invasive and leaving the target poisoned — see statuses. The free once-per-battle ability, Autogenic Reaction, arrives at level 25: Remakes its own ground: +6 ATK and heal 25%. Its advanced attack, Taproot Canal, unlocks at level 40 for 6 Sun (25 / 25) and mends the plant as it strikes. Most of your specimens sit below level 40, where only the starter is available. See moves.
Foamflower keeps a single always-on trait: Resprout. It draws only one eligible trait, so Resprout comes in at half strength on the level 10 riser and matures on the level 68 one. When it works it lets the plant survive one otherwise-lethal hit at roughly a quarter health, but it triggers only about 60% of the time, so treat it as a coin-flip reprieve rather than a guarantee. See abilities.
It carries no trait keywords — no thorns, no toxin — so nothing punishes an attacker for hitting it, and it is non-toxic with no hazard ring. Its growth habit is terrestrial, so it is not eligible for a Moss Pole. As a native, defensive field gear such as a Cloche helps its thin frame survive; as an invasive, offensive gear helps offset its low base ATK.
At level 40 it reads 103 HP native / 89 invasive, with ATK of 19 native versus 19 invasive — a small invasive bump, but the damage stays low either way. DEF is just 4, low in the perennial-herb band, so it takes hits with almost no armor. Its tempo is front-loaded: turn 1 runs on a high initiative (51), so it usually leads the opening exchange, but every turn after runs on a lower SPD (34), so it is out-paced once the fight settles. Retreat costs 16 Sun. As a native it gains a +15% HP cushion and projects a bench HP overshield; as an invasive it pays Faustian self-damage to its own bench on each damaging attack and concedes 2 prizes when knocked out. See Stats.
Matured to level 100 it swells to 190 HP native / 165 invasive and 33 / 34 ATK, but its DEF only reaches 8 — as a soft herb it gains bulk in health, never armor, so it stays fragile against any real hitter. Retreat rises to 33 Sun and its tempo sinks to roughly 1% of cap, so a mature plant acts last against almost anything younger. Maturing buys HP, poison, and healing volume, not toughness.
As a perennial herb it sits in the Competitor succession group. It hits Ruderal plants (annual forbs, grasses, aquatics, bulbs) for x1.5 and is struck for only x0.667 by them; it is weak to Specialist plants (succulents, conifers, ferns, epiphytes), which hit it for x1.5 while resisting its blows. Against other Competitors and the off-wheel Weird group the matchup is neutral. See Weaknesses & Resistances.
As a native, play it as a bench-sitter and early poker: its high initiative lands the first poison, and its cushion and overshield help a fragile partner, but its soft ATK and thin armor mean it should not stay in a slugfest. As an invasive, it is a weak attacker best used to chip and poison rather than to finish. Its value is also economic: it is inedible, so any nutrient banks x1.25 XP rather than coins. It fights as a fast opener whose thin bulk only slowly takes over, crossing around level 32 — always stronger in raw stats higher up, so never hold it back.
Leveling trades speed for power. A plant’s tempo (SPD + INI, the turn-order edge) fades as it grows, while its power (HP + ATK + DEF, net of the rising Sun cost to retreat) climbs. The crossover is the level where power overtakes tempo: below it the plant is a fast skirmisher, above it a heavyweight. Shown for each stance this plant can actually hold — native adds a HP cushion, invasive an attack edge, neutral neither — with the card at its crossover and fully grown at Lv 100.