---
name: "Seaside Haven"
mana_cost: "N/A"
cmc: 0
type_line: "Land"
colors: []
color_identity: ["U", "W"]
keywords: []
set: "ONS"
set_name: "Onslaught"
collector_number: "323"
rarity: "uncommon"
artist: "Mark Brill"
oracle_id: "4adc39dd-8de1-4298-947c-ff666ec3adeb"
canonical_url: "https://avascry.com/printing/seaside-haven-ons"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Seaside Haven
- **Mana Cost:** `N/A` (CMC: 0)
- **Type:** Land

## Oracle Text
{T}: Add {C}.
{W}{U}, {T}, Sacrifice a Bird: Draw a card.

## Top 4096-Dim Neural Synergies
1. [Sea Gate Wreckage](/printing/sea-gate-wreckage-cmm.md) — Land
2. [Misty Palms Oasis](/printing/misty-palms-oasis-tla.md) — Land
3. [Skybridge Towers](/printing/skybridge-towers-plst.md) — Land
4. [Waterfront District](/printing/waterfront-district-snc.md) — Land
5. [Horizon Canopy](/printing/horizon-canopy-who.md) — Land
6. [Waterlogged Grove](/printing/waterlogged-grove-who.md) — Land

## Printing Details
- **Set:** Onslaught (ONS) #323
- **Rarity:** Uncommon
- **Artist:** Mark Brill
- **Total Printings:** 9 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `not_legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `not_legal`